皮皮学，免费搜题
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【单选题】
生成树协议的BID(网桥ID)是由( )组成的
A.
网桥优先级与网桥IP地址
B.
网桥优先级与网桥MAC地址
C.
网桥MAC地址与网桥IP地址
D.
网桥MAC地址与端口号
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知识点：
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举一反三
【单选题】Suppose the rated capacity of the main engine of a ship is 10,000 kW at 100 rated rpm, then when at 80 rpm its capacity should be _____.
A.
800 kW
B.
5120 kW
C.
6400 kW
D.
4180 kW
查看完整题目与答案
【单选题】Rated current of AC contactor under different rated voltage
A.
same
B.
has nothing to do with the voltage
C.
is proportional to the voltage
D.
different
查看完整题目与答案
【单选题】Rated current of the contactor refers to ( )
A.
rated current of the coil
B.
rated current of the main contact
C.
rated current of the auxiliary contact
D.
None of the above three
查看完整题目与答案
【单选题】The rated power of this inductive motor is 3 Kw, this means ______.
A.
The rated power of this inductive motor is 3 Kw, this means ______.
B.
The rated power of this inductive motor is 3 Kw, this means ______.
C.
the maximum mechanical input power of the shaft is 3 Kw
D.
the maximum electric output power of the power source is 3 Kw
查看完整题目与答案
【单选题】将公安部的出入境管理、边防检查职责整合，建立健全签证管理协调机制，组建国家__管理局。
A.
移民
B.
边防检查
查看完整题目与答案
【单选题】The car is running at the ______ of 40 kilometers an hour.
A.
rates
B.
rating
C.
rate
D.
rated
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【单选题】The generator normally operates at 5% above the network rated voltage, so the rated voltage of the generator is specified to be 5% above the network rated voltage. Accroding to the above description, ...
A.
6 kV
B.
6.15 kV
C.
6.3 kV
D.
6.6 kV
查看完整题目与答案
【单选题】The windlass shall be able to work continuously for _____ at the rated speed of the rated load,
A.
30 minutes
B.
1 hour
C.
1.5 hour
D.
20 minutes
查看完整题目与答案
【单选题】Rated current of the thermal relay is according to ( ).
A.
the rated current of the motor
B.
main circuit current
C.
control circuit of current
D.
electric heating element of the current selection
查看完整题目与答案
【单选题】Rated current of the thermal relay setting according to the rated current of the motor, generally choose ( ) times of the motor rated current.
A.
1.5-2.5
B.
3-5
C.
0.95-1.05
D.
5-7
查看完整题目与答案
相关题目：
【单选题】Suppose the rated capacity of the main engine of a ship is 10,000 kW at 100 rated rpm, then when at 80 rpm its capacity should be _____.
A.
800 kW
B.
5120 kW
C.
6400 kW
D.
4180 kW
查看完整题目与答案
【单选题】Rated current of AC contactor under different rated voltage
A.
same
B.
has nothing to do with the voltage
C.
is proportional to the voltage
D.
different
查看完整题目与答案
【单选题】Rated current of the contactor refers to ( )
A.
rated current of the coil
B.
rated current of the main contact
C.
rated current of the auxiliary contact
D.
None of the above three
查看完整题目与答案
【单选题】The rated power of this inductive motor is 3 Kw, this means ______.
A.
The rated power of this inductive motor is 3 Kw, this means ______.
B.
The rated power of this inductive motor is 3 Kw, this means ______.
C.
the maximum mechanical input power of the shaft is 3 Kw
D.
the maximum electric output power of the power source is 3 Kw
查看完整题目与答案
【单选题】将公安部的出入境管理、边防检查职责整合，建立健全签证管理协调机制，组建国家__管理局。
A.
移民
B.
边防检查
查看完整题目与答案
【单选题】The car is running at the ______ of 40 kilometers an hour.
A.
rates
B.
rating
C.
rate
D.
rated
查看完整题目与答案
【单选题】The generator normally operates at 5% above the network rated voltage, so the rated voltage of the generator is specified to be 5% above the network rated voltage. Accroding to the above description, ...
A.
6 kV
B.
6.15 kV
C.
6.3 kV
D.
6.6 kV
查看完整题目与答案
【单选题】The windlass shall be able to work continuously for _____ at the rated speed of the rated load,
A.
30 minutes
B.
1 hour
C.
1.5 hour
D.
20 minutes
查看完整题目与答案
【单选题】Rated current of the thermal relay is according to ( ).
A.
the rated current of the motor
B.
main circuit current
C.
control circuit of current
D.
electric heating element of the current selection
查看完整题目与答案
【单选题】Rated current of the thermal relay setting according to the rated current of the motor, generally choose ( ) times of the motor rated current.
A.
1.5-2.5
B.
3-5
C.
0.95-1.05
D.
5-7
查看完整题目与答案