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【多选题】
根据结构、工作原理和功用的不同,顺序阀可以分为( )A.
直动式顺序阀
B.
先导式顺序阀
C.
液控顺序阀
D.
单向顺序阀
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举一反三
【单选题】The haze weather arouses people's ___________ over the environment.
A.
knot
B.
concern
C.
click
D.
careful
【单选题】As for the differences between fog and haze, which of the following statement is wrong? ( )
A.
The vertical thickness of haze is greater than fog
B.
Fog is mainly consisted of small liquid particles, while haze is mainly consisted of small solid particles
C.
Fog is more visible than haze
D.
Fog contains more water than haze
【单选题】Which statement is correct?
A.
FEC requests are first acknowledged by the vessel' s transmitter before broadcasts can be received, '
B.
FEC mode broadcasts can be received without the transmitter being tumed on
C.
) Weather'broadcasts are always made in ARQ mode to ensure reception.
D.
FEC mode improves the efficiency of communication.
【多选题】When you want to explain the cause of haze, you may say________
A.
It is caused by more and more vehicles we have.
B.
More and more vehicles we have is the main cause of haze.
C.
More and more vehicles we have result in haze.
【简答题】在Windows中,控制菜单图标位于窗口的( )。
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