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Before liquid can flow into a pump, the air in the suction line must be () sufficiently to cause the liquid to flow into the suction chamber.

单选题
2022-03-16 06:02
A、filled
B、evacuated
C、compressed
D、charged
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正确答案
B

试题解析

感兴趣题目
An uncontrolled flow of gas,oil,or other well fluids into the atmosphere is called a().
Through a () pump, the liquid is transferred from the suction to the discharge by the mechanical variation of the volume of a chamber or chambers.
Before liquid can flow into a pump, the air in the suction line must be () sufficiently to cause the liquid to flow into the suction chamber.
保持安全值班的目的包括:() Ⅰ、避免船舶发生碰撞事故Ⅱ、避免船舶发生火灾Ⅲ、避免船舶污染环境
An uncontrolled flow of gas, oil, or other well fluids into the atmosphere is called a().
不符合“A”型船舶特点的其他船舶均称为“B”型船舶。
船长应负责保管的船舶安全管理方面的证书有()。 Ⅰ.符合证明; Ⅱ.符合证明的副本; Ⅲ.船舶安全管理证书; Ⅳ.船舶安全管理证书的副本。
Which of the following pumps are self-priming, and can deal with liquid from a level below the pump() (1) ejector (2) screw (3) centrifugal
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A公司与B公司签订《船舶转让协议》,约定A公司将船舶转让给B公司,转让价格为XX万元B公司交押金X万元,以后每月支付船价及利息X万元,如两个月内不付转让费,A公司有权收回船舶由B公司负责办理船舶营运手续B公司中途无故退回船舶,已付的转让费不再退回,等等。B公司经营船舶一年后,以A公司提供的船舶陈旧,操纵性能差等为由,向A公司提出终止船舶转让协议。A公司欲协商,但协商不成,A公司收回船舶国籍证书,船舶技术证书及营运证书。该协议属海商法范围内的何种合同?该协议是否有效
The discharge flow of a reciprocating pump is ().
Under centrifugal pumps are the volute, diffuser, mixed-flow, axial flow and () or regenerative types.
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