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【单选题】
(2011年)卡诺循环由两个等温过程和两个绝热过程组成，过程的条件是( )。
A.
绝热过程必须可逆，而等温过程可以任意
B.
所有过程均是可逆的
C.
所有过程均可以是不可逆的
D.
等温过程必须可逆，而绝热过程可以任意
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参考答案：
举一反三
【判断题】Office 2010是一种办公自动化软件。
A.
正确
B.
错误
查看完整题目与答案
【单选题】该患者目前最主要的治疗措施是( )
A.
抗生素控制感染
B.
应用镇咳药
C.
给予吸氧
D.
进行缩唇腹式呼吸训练
E.
使用支气管舒张药
查看完整题目与答案
【单选题】S1: Is there any difference between the new type and the old one？ S2: There is a solenoid valve in the starting system. Q: What is the difference between the new type and the old one? 02020dh004
A.
There is a solenoid valve in the starting system
B.
There is a solenoid valve in the fuel oil system
C.
There is a solenoid valve in the injection system
D.
There is a solenoid valve in the lubrication system
查看完整题目与答案
【单选题】交流接触器常用于远距离接通和分断()的电路。
A.
380V、630A
B.
1140V、630A
C.
1140V、1000A
D.
1500V、1000A
查看完整题目与答案
【单选题】Fuel shutoff solenoid is controlled by the ( ).
A.
ECU
B.
PWM
C.
PCM
D.
none of above
查看完整题目与答案
【单选题】The current flowing in a long thin solenoid is linearly increasing.
A.
The induced electric field exists only inside the solenoid.
B.
The induced electric field exists only outside the solenoid.
C.
The induced electric field exists both inside and outside the solenoid.
D.
No induced electric field exists both inside and outside the solenoid.
查看完整题目与答案
【单选题】The starter solenoid is _______ operated heavy duty switch.
A.
an electromagnetically
B.
an electrically
C.
a hydraulically
D.
an automatically
查看完整题目与答案
【单选题】A solenoid is 3.0 cm long and has a radius of 0.50 cm. It is wrapped with 500 turns of wire carrying a current of 2.0A. The magnetic field at the center of the solenoid is:
A.
9.9 × T
B.
1.3 × T
C.
4.2 × T
D.
10 T
查看完整题目与答案
【单选题】A small planar loop is placed inside a straight solenoid. When the angle between the normal direction of the loop and the axis of the solenoid is gradually increased from 0to 90 degree, how does the m...
A.
Does not change.
B.
Increases.
C.
Decreases.
D.
Decreases first and then increases.
查看完整题目与答案
【单选题】交流接触器常用于远距离接通和分断(    )的电路。
A.
电压至380V、电流至630A    
B.
电压至1140V、电流至630A
C.
电压至1140V、电流至1000A
查看完整题目与答案
相关题目：
【判断题】Office 2010是一种办公自动化软件。
A.
正确
B.
错误
查看完整题目与答案
【单选题】该患者目前最主要的治疗措施是( )
A.
抗生素控制感染
B.
应用镇咳药
C.
给予吸氧
D.
进行缩唇腹式呼吸训练
E.
使用支气管舒张药
查看完整题目与答案
【单选题】S1: Is there any difference between the new type and the old one？ S2: There is a solenoid valve in the starting system. Q: What is the difference between the new type and the old one? 02020dh004
A.
There is a solenoid valve in the starting system
B.
There is a solenoid valve in the fuel oil system
C.
There is a solenoid valve in the injection system
D.
There is a solenoid valve in the lubrication system
查看完整题目与答案
【单选题】交流接触器常用于远距离接通和分断()的电路。
A.
380V、630A
B.
1140V、630A
C.
1140V、1000A
D.
1500V、1000A
查看完整题目与答案
【单选题】Fuel shutoff solenoid is controlled by the ( ).
A.
ECU
B.
PWM
C.
PCM
D.
none of above
查看完整题目与答案
【单选题】The current flowing in a long thin solenoid is linearly increasing.
A.
The induced electric field exists only inside the solenoid.
B.
The induced electric field exists only outside the solenoid.
C.
The induced electric field exists both inside and outside the solenoid.
D.
No induced electric field exists both inside and outside the solenoid.
查看完整题目与答案
【单选题】The starter solenoid is _______ operated heavy duty switch.
A.
an electromagnetically
B.
an electrically
C.
a hydraulically
D.
an automatically
查看完整题目与答案
【单选题】A solenoid is 3.0 cm long and has a radius of 0.50 cm. It is wrapped with 500 turns of wire carrying a current of 2.0A. The magnetic field at the center of the solenoid is:
A.
9.9 × T
B.
1.3 × T
C.
4.2 × T
D.
10 T
查看完整题目与答案
【单选题】A small planar loop is placed inside a straight solenoid. When the angle between the normal direction of the loop and the axis of the solenoid is gradually increased from 0to 90 degree, how does the m...
A.
Does not change.
B.
Increases.
C.
Decreases.
D.
Decreases first and then increases.
查看完整题目与答案
【单选题】交流接触器常用于远距离接通和分断(    )的电路。
A.
电压至380V、电流至630A    
B.
电压至1140V、电流至630A
C.
电压至1140V、电流至1000A
查看完整题目与答案
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