举一反三
- An electric heater draws 10 A from a 120V line. The resistance of the heater is .A. 1200 Ω B. 120 ΩC. 12 Ω D. 1.2 Ω
- ()An<br/>electric heater draws 10A from a 380-V line. The resistance R of the<br/>heater is () A: 3800Ω B: 380Ω C: 38Ω D: 3.8Ω
- Single-An<br/>electric heater draws 10A from a 380-V line. The resistance R of the<br/>heater is () A: 3800Ω B: 380Ω C: 38Ω D: 3.8Ω
- There's an electric( heater) in the bedroom. A: 空调 B: 暖炉
- When replacing a power supply， what MUST the technician observe？（） A: voltage B: current C: wattage D: resistance
内容
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The Rule of 70 is used to A: estimate how much of an economy's growth rate is due to increases in capital per hour of labor B: calculate the standard of living C: calculate the economy's growth rate D: estimate how long it will take the level of any variable to double
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智慧职教: In the passenger compartment, heater blanket supply more heat around __________.
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(10分)This heater consumes _______________ that one does. A: greater twice electric power B: electric power twice as great as C: twice as great electric power as D: twice greater electric power
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What’s the main purpose of the servo fuel heater on CFM56-3 engine? ( ) A: To decrease the supply oil temperature B: To increase the servo fuel temperature C: To decrease the scavenge oil temperature D: To increase the combustion fuel temperature
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This formula is used to______ the area of a circle. A: calculating B: calculate