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【判断题】
闪光对焊时,对焊件端面的准备要比电阻对焊严格得多。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】The follow-up gear on an electro-hydraulic steering gear
A.
relieves excessive fluid pressure
B.
takes the pump off stroke when the desired rudder angle is attained
C.
allows for rudder movement faster than the movement of the ship&39;s
D.
returns the rudder to amidships when the wheel is release
【单选题】Why did the balloon attempt fail?
A.
It twisted and the helium at the top came under pressure, causing a seam to split.
B.
The weather conditions were not perfect.
C.
They had difficulty in inflating the balloon.
D.
The Mission Controller stopped trying.
【单选题】The counterclockwise swirling of the hurricane is brought about by______.
A.
the low-pressure area in the center of the storm
B.
the force of waves of water
C.
the trade winds
D.
the increasing heat
【单选题】The author brushed his teeth over and over
A.
to relieve himself of the pressure.
B.
to ease his toothache.
C.
to shake off the cold.
D.
to remove the dirt.
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