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【简答题】
有机化合物一般采用按1不同分类和按2不同分类。 1)、按1不同,有机物可以分为3(又称5)和4。 根据4原子种类不同,又分为6和7。 根据6碳环中碳原子的结合方式不同,又分 为8和9。 2)、按2不同,有机化合物又分为烯,炔,等。
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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
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【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
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【判断题】一切从实际出发是做好各项事情的基本要求、前提和依据。（ ）
A.
正确
B.
错误
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【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
查看完整题目与答案
【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
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【单选题】If 12 volts are being applied to a resistance of 3 ohms,______________ amperes will flow.
A.
12
B.
3
C.
4
D.
36
查看完整题目与答案
【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.
查看完整题目与答案
【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.'
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【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
查看完整题目与答案
【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
查看完整题目与答案
相关题目：
【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
查看完整题目与答案
【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
查看完整题目与答案
【判断题】一切从实际出发是做好各项事情的基本要求、前提和依据。（ ）
A.
正确
B.
错误
查看完整题目与答案
【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
查看完整题目与答案
【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
查看完整题目与答案
【单选题】If 12 volts are being applied to a resistance of 3 ohms,______________ amperes will flow.
A.
12
B.
3
C.
4
D.
36
查看完整题目与答案
【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.
查看完整题目与答案
【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.'
查看完整题目与答案
【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
查看完整题目与答案
【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
查看完整题目与答案