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【单选题】
下列关于导致机器设备经济性贬值的因素的说法，正确的是()。
A.
受自然界中有害气体的侵蚀，设备出现腐蚀和老化
B.
设备零部件受到冲击，导致设备零部件精度降低
C.
由于技术进步，使得相同功能新设备的制造成本比过去降低功能性
D.
国家环境保护的法律使设备强制报废，缩短了设备的正常使用寿命外部引起的经济性贬值。
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参考答案：
举一反三
【判断题】In the use of sources, we need to keep direct quotation to the minimum.
A.
正确
B.
错误
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【单选题】Wilson: Are you feeling any better today? I hear you got the flu. Jim:______.
A.
I'm afraid not. I feel worse.
B.
Yes, I got the flu.
C.
I feel good today.
D.
No, I've been in bed for nearly a week.
查看完整题目与答案
【单选题】The use of transformer oil in a minimum-oil circuit breaker is ()
A.
to quench the arc and establish an insulated break between the contacts.
B.
to quench the arc and build insulation between the arc-quenching chamber and ground
C.
to establish an insulated break between the contacts and build insulation between the arc-quenching chamber and ground.
D.
to protect the circuit breaker from firing
查看完整题目与答案
【单选题】The wear of two metal surfaces can be reduced to minimum by use of ______.
A.
a suitable lubricant
B.
a proper coolant
C.
a sealing agent
D.
a hydraulic fluid
查看完整题目与答案
【单选题】— What's the _____, John? — I have got the flu. [     ]
A.
weather
B.
matter
C.
wrong
查看完整题目与答案
【单选题】By regulation，you MUST keep a record of the use of your radiotelephone for a minimum of（）.
A.
six months
B.
one year
C.
two years
D.
thirty months
查看完整题目与答案
【多选题】哪些方面的课程可能是电气工程专业需要学习的?
A.
数学方面的课程
B.
语言学
C.
电路
D.
磁路
E.
电器设备如洗衣机，电磁炉
查看完整题目与答案
【多选题】古埃及雕塑艺术的原则不包括()。
A.
同一律
B.
吸引律
C.
三一律
D.
正面律
查看完整题目与答案
【简答题】自然地理环境由 、 、 和 四个基本地圈组成。
查看完整题目与答案
【单选题】－I'm afraid I've got terrible flu. －( ).A: Never mindB: Keep away from meC: You&
A.
-I'm afraid I've got terrible flu. -( ). A: Never mind
B.
Keep away from me
C.
You'd better go and see a doctor
D.
You need to be more careful
查看完整题目与答案
相关题目：
【判断题】In the use of sources, we need to keep direct quotation to the minimum.
A.
正确
B.
错误
查看完整题目与答案
【单选题】Wilson: Are you feeling any better today? I hear you got the flu. Jim:______.
A.
I'm afraid not. I feel worse.
B.
Yes, I got the flu.
C.
I feel good today.
D.
No, I've been in bed for nearly a week.
查看完整题目与答案
【单选题】The use of transformer oil in a minimum-oil circuit breaker is ()
A.
to quench the arc and establish an insulated break between the contacts.
B.
to quench the arc and build insulation between the arc-quenching chamber and ground
C.
to establish an insulated break between the contacts and build insulation between the arc-quenching chamber and ground.
D.
to protect the circuit breaker from firing
查看完整题目与答案
【单选题】The wear of two metal surfaces can be reduced to minimum by use of ______.
A.
a suitable lubricant
B.
a proper coolant
C.
a sealing agent
D.
a hydraulic fluid
查看完整题目与答案
【单选题】— What's the _____, John? — I have got the flu. [     ]
A.
weather
B.
matter
C.
wrong
查看完整题目与答案
【单选题】By regulation，you MUST keep a record of the use of your radiotelephone for a minimum of（）.
A.
six months
B.
one year
C.
two years
D.
thirty months
查看完整题目与答案
【多选题】哪些方面的课程可能是电气工程专业需要学习的?
A.
数学方面的课程
B.
语言学
C.
电路
D.
磁路
E.
电器设备如洗衣机，电磁炉
查看完整题目与答案
【多选题】古埃及雕塑艺术的原则不包括()。
A.
同一律
B.
吸引律
C.
三一律
D.
正面律
查看完整题目与答案
【简答题】自然地理环境由 、 、 和 四个基本地圈组成。
查看完整题目与答案
【单选题】－I'm afraid I've got terrible flu. －( ).A: Never mindB: Keep away from meC: You&
A.
-I'm afraid I've got terrible flu. -( ). A: Never mind
B.
Keep away from me
C.
You'd better go and see a doctor
D.
You need to be more careful
查看完整题目与答案
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