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set_041_黄誉扬.json

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+{
+    "set_id": "set_041",
+    "annotator": "黄誉扬",
+    "qa_pairs": [
+        {
+            "id": 1,
+            "domain": "Education",
+            "task_type": {
+                "L1": "III. Cross-Video Integrated Reasoning",
+                "L2": "4. Domain Knowledge Application",
+                "L3": "(1) Specialized Knowledge Comprehension"
+            },
+            "question": "If the cooling module (including fan and fins) of the Steam Deck is regarded as a thermodynamic system, according to the definition in Video A, which description of its exchange with the environment is correct?",
+            "options": {
+                "A": "It is an isolated system: because heat is enclosed inside the casing",
+                "B": "It is an open system: because it continuously exchanges matter with the environment through air inlets and outlets",
+                "C": "It is an adiabatic system: because it uses high-efficiency heat pipe technology",
+                "D": "It only exchanges work, not heat"
+            },
+            "answer": "B",
+            "evidence": [],
+            "created_at": "2026-02-24T21:40:59.818519"
+        },
+        {
+            "id": 2,
+            "domain": "Education",
+            "task_type": {
+                "L1": "III. Cross-Video Integrated Reasoning",
+                "L2": "4. Domain Knowledge Application",
+                "L3": "(1) Specialized Knowledge Comprehension"
+            },
+            "question": "Based on the First Law in Video A, why is almost all the electric energy consumed by the Steam Deck converted into heat instead of a large amount of useful work like a mechanical motor?",
+            "options": {
+                "A": "Because it is an electronic device: electronic devices do not obey thermodynamic laws",
+                "B": "Because the fan rotation cancels out the work",
+                "C": "Energy loss caused by battery leakage",
+                "D": "Nature of energy dissipation: When the CPU performs logical operations (microscopic work), charges moving in semiconductor transistors constantly overcome resistance. According to the First Law, the consumed electrical work eventually degenerates entirely into disordered molecular kinetic energy, i.e., heat"
+            },
+            "answer": "D",
+            "evidence": [],
+            "created_at": "2026-02-24T21:41:47.669315"
+        },
+        {
+            "id": 3,
+            "domain": "Education",
+            "task_type": {
+                "L1": "III. Cross-Video Integrated Reasoning",
+                "L2": "4. Domain Knowledge Application",
+                "L3": "(1) Specialized Knowledge Comprehension"
+            },
+            "question": "Based on the theory in Video A, how does increasing the volume and mass of the magnesium alloy frame in the Steam Deck help control the intensive property (temperature) of the APU in thermodynamic essence?",
+            "options": {
+                "A": "Reduces the heating frequency of the APU",
+                "B": "Increases the total heat capacity (extensive property) of the system",
+                "C": "Changes the chemical properties of air",
+                "D": "Converts intensive properties into extensive properties"
+            },
+            "answer": "B",
+            "evidence": [],
+            "created_at": "2026-02-24T21:42:17.310054"
+        },
+        {
+            "id": 4,
+            "domain": "Education",
+            "task_type": {
+                "L1": "III. Cross-Video Integrated Reasoning",
+                "L2": "4. Domain Knowledge Application",
+                "L3": "(1) Specialized Knowledge Comprehension"
+            },
+            "question": "If the APU heats up from 30°C to 90°C, according to the theory of state functions and processes in Video A, which statement is correct?",
+            "options": {
+                "A": "The increase in internal energy of the APU is the same under both fan settings",
+                "B": "The total heat discharged by the system is the same under both settings",
+                "C": "The electrical work done by the system is path-independent",
+                "D": "The change in internal energy is maximized only at the maximum fan speed"
+            },
+            "answer": "A",
+            "evidence": [],
+            "created_at": "2026-02-24T21:43:27.025670"
+        }
+    ]
+}

set_042_黄誉扬.json

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+{
+    "set_id": "set_042",
+    "annotator": "黄誉扬",
+    "qa_pairs": [
+        {
+            "id": 1,
+            "domain": "Education",
+            "task_type": {
+                "L1": "III. Cross-Video Integrated Reasoning",
+                "L2": "4. Domain Knowledge Application",
+                "L3": "(1) Specialized Knowledge Comprehension"
+            },
+            "question": "If only the circulating water in the indoor cooling loop is taken as the research system, according to the definition in Video A, what is the most accurate thermodynamic classification of this system during steady-state operation?",
+            "options": {
+                "A": "Isolated System: because the cooling water is sealed in metal pipes without any mass or energy exchange with the outside.",
+                "B": "Open System: because water flows at high speed in the pipes, and the change in position means it continuously exchanges kinetic energy with the environment.",
+                "C": "Closed System: because the cooling water circulates in sealed pipes with constant mass (no mass exchange), but it continuously absorbs heat from servers and releases heat outdoors at heat exchangers (energy exchange).",
+                "D": "Adiabatic System: because Google uses high-performance thermal insulation materials to wrap the pipes and prevent all heat loss."
+            },
+            "answer": "C",
+            "evidence": [],
+            "created_at": "2026-02-24T22:04:32.707587"
+        },
+        {
+            "id": 2,
+            "domain": "Education",
+            "task_type": {
+                "L1": "III. Cross-Video Integrated Reasoning",
+                "L2": "4. Domain Knowledge Application",
+                "L3": "(1) Specialized Knowledge Comprehension"
+            },
+            "question": "Based on the theory in Video A, which description of the physical property of the PUE metric is correct?",
+            "options": {
+                "A": "PUE is an extensive property: as the data center scale (more servers) increases, total power consumption rises and PUE grows exponentially.",
+                "B": "PUE is an intensive property: it is the ratio of two extensive properties (total power and IT power), describing system efficiency and not changing its value with simple doubling of data center scale.",
+                "C": "PUE is a state function: it depends only on data center location (ambient temperature), independent of cooling path (process).",
+                "D": "PUE is a path function: it describes the path of heat flow and thus has the dimension of energy (joules)."
+            },
+            "answer": "B",
+            "evidence": [],
+            "created_at": "2026-02-24T22:05:03.942283"
+        },
+        {
+            "id": 3,
+            "domain": "Education",
+            "task_type": {
+                "L1": "III. Cross-Video Integrated Reasoning",
+                "L2": "4. Domain Knowledge Application",
+                "L3": "(1) Specialized Knowledge Comprehension"
+            },
+            "question": "When the data center operates at steady state, the servers consume 100 kW of electric power. Based on the theory in Video A, which explanation of the energy destination is most consistent with physical laws?",
+            "options": {
+                "A": "Complete energy conversion: since the internal energy change inside the server is zero, according to the First Law, the input 100 kW electric energy must eventually be fully discharged as heat through the cooling system; otherwise, the server temperature would rise infinitely and cause failure.",
+                "B": "Disappears in computation: electric energy is converted into logical bits stored in the hard disk, so only a small part becomes heat.",
+                "C": "Kinetic energy cancellation: high-speed fan rotation generates kinetic energy that cancels part of the heat from electric energy.",
+                "D": "Entropy reduction process: computation is an ordering process that absorbs heat from the environment and eases the burden on the cooling system."
+            },
+            "answer": "A",
+            "evidence": [],
+            "created_at": "2026-02-24T22:06:04.532450"
+        },
+        {
+            "id": 4,
+            "domain": "Education",
+            "task_type": {
+                "L1": "III. Cross-Video Integrated Reasoning",
+                "L2": "4. Domain Knowledge Application",
+                "L3": "(1) Specialized Knowledge Comprehension"
+            },
+            "question": "Assume the server cools from full-load temperature of 80 °C to 20 °C. Based on Video A, which statement about this process is correct?",
+            "options": {
+                "A": "The change in internal energy is independent of the cooling path.",
+                "B": "Total heat rejected must be the same for both paths.",
+                "C": "Mechanical refrigeration has a larger internal energy change than evaporative cooling due to extra work input.",
+                "D": "The change in state functions depends on fan speed."
+            },
+            "answer": "A",
+            "evidence": [],
+            "created_at": "2026-02-24T22:07:31.561484"
+        }
+    ]
+}