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?（）

99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精