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【简答题】
Which of the following in NOT mentioned as a reason for the disrupted sleep of travelers?
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【判断题】The ignition system is designed to convert the 12 volts from the battery into 5,000 to 40,000 volts needed to jump the gap of a spark plug.
A.
正确
B.
错误
【多选题】( )属于企业组织信息分析。
A.
可靠性分析
B.
数理统计分析
C.
经济学分析
D.
财务报表分析
E.
合理性分析
【单选题】With TTL, anything below 0.8 volts is considered to be a zero, and anything from _______________ volts to V cc (assuming the DC supply voltage is 5 volts) is a logical one.
A.
1.0
B.
2.0
C.
3.0
D.
4.0
【单选题】If you bein time for the early bus ,be sure to get up before five o’clock in the morning.
A.
are to               
B.
are about to       
C.
are going to      
D.
are due to
【单选题】If a particle with a charge of 2 coulombs moves through a potential difference of 12 volts, its change in kinetic energy will a have magnitude of
A.
6 J
B.
12 J
C.
18 J
D.
24 J
【单选题】If a particle with a charge of 2 coulombs moves through a potential difference of 12 volts, its change in kinetic energy will a have magnitude of
A.
12 J.
B.
6 J.
C.
8 J.
D.
24 J.
【多选题】()属于企业组织信息分析。
A.
可靠性分析
B.
数理统计分析
C.
综合比较分析
D.
财务报表分析
E.
合理性分析
【单选题】Which of the following statements is true?
A.
At 150 volts, the learner began to complain about the pain.
B.
At 300 volts, the learner complained about his heart condition.
C.
At 180 volts, the learner demanded that the experiment be halted.
D.
The position of 370 volts had been marked 'Danger: Severe Shock.'
【单选题】The function of direct current regulated power supply is to input an alternating current power of 220volts, so that it can output __________.
A.
direct current 24 volts voltage
B.
alternating current 24 volts voltage
C.
direct current 200 volts voltage
D.
alternating current 200 volts voltage
【单选题】How many volts does a power supply’s 4-pin Molex connector carry to internal devices?()
A.
2.5 volts
B.
5 volts
C.
6 volts
D.
15 volts
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