司机操纵副驾驶台控制压缩空气与解钩气缸相通的电磁阀的按钮使解钩气缸冲气,完成解钩动作。
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()is the main reason that reduces the power advantage of a two-stroke engine over a same size four-stroke one to about()
A. Inefficient scavenging;twice
B. Inefficient scavenging;1~8 times
C. Fewer strokes in a circle;twice
D. Fewer strokes in a circle;1~8 time
中、低压管道安装法兰时,紧固好的螺母应与法兰紧贴无缝,需加垫圈时每个螺栓不超过()个。
A. 1
B. 2
C. 3
D. 4
轮胎式集装箱门式起重机大车行走机构的四角均装有碰箱杆,所以有一根损坏不必马上报修。()
A. 正确
B. 错误
存折/对账簿因无法读磁或磁道信息出错的,有密户存折/对账簿可在全国任一网点办理重新写磁。
A. 正确
B. 错误