單項(xiàng)選擇題

An axial piston, variable stroke pump is used in a vessels hydraulic steering gearUnder pressure, oil continually leaks out from between the valve plate/cylinder barrel and will（）.

A.cause loss of hydraulic oil from the system
B.result in extreme damage to the pump
C.cause damage to the pump ff not continually drained from the pump casing
D.result in the system high side pressure to substantially drop off

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單項(xiàng)選擇題

In a flash type evaporator, all saltwater headers are vented through individual vent cocks to the（）.

A.saltwater heater shell
B.second-stage condenser
C.atmosphere
D.second-stage flash chamber

單項(xiàng)選擇題

Which of the listed characteristics of lube oil are the most important to the engineer from an operational standpoint?（）

A.Ash content, carbon residue, and gravity
B.Viscosity, acidity, and demulsibility
C.Pour point, flash, point, and precipitation number
D.Auto-ignition point, viscosity index, and film strength

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An axial piston, variable stroke pump is used in a vessels hydraulic steering gearUnder pressure, oil continually leaks out from between the valve plate/cylinder barrel and will（）.

你可能感興趣的試題

In a flash type evaporator, all saltwater headers are vented through individual vent cocks to the（）.

Which of the listed characteristics of lube oil are the most important to the engineer from an operational standpoint?（）

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久