液压油箱通常用氮气增压，以防止油液起泡和气蚀。

单选题液压油箱通常用氮气增压，以防止油液起泡和气蚀。

A、 The hydraulic reservoir is usually pressurized with nitrogen to prevent foaming and cavitation.

B、 The hydraulic reservoir is usually filled with nitrogen to increase pressure.

C、 The hydraulic reservoir is usually vented to the atmosphere to release pressure.

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相关试题

单选题维修人员在进行任何电气工作前，必须断开电瓶。

A、Maintenance personnel must disconnect the battery before doing any electrical work.

B、Maintenance personnel must connect the battery before doing any electrical work.

C、Maintenance personnel must check the battery before doing any electrical work.

单选题如果液压系统压力低于最小值，警告灯会亮起。

A、If the hydraulic system pressure falls below the minimum, the warning light will come on.

B、If the hydraulic system pressure exceeds the maximum, the warning light will come on.

C、If the hydraulic system temperature is too high, the warning light will come on.

单选题在断开任何液压管路之前，请确保系统已释压。

A、Before disconnecting any hydraulic lines, make sure that the system is depressurized.

B、After disconnecting any hydraulic lines, make sure that the system is pressurized.

C、Before connecting any hydraulic lines, make sure that the system is clean.

单选题起落架放出后，三个绿灯应亮起，表示已锁定。

A、After the landing gear is extended, three green lights should come on to indicate it is locked.

B、After the landing gear is retracted, three green lights should come on to indicate it is locked.

C、During landing gear extension, three red lights should come on to indicate it is moving.

单选题如果燃油交输活门打开，两个油箱的燃油可以互相传输。

A、If the fuel crossfeed valve is open, fuel can be transferred between the two tanks.

B、If the fuel crossfeed valve is closed, fuel can be transferred between the two tanks.

C、If the fuel crossfeed valve is open, fuel supply to the engines is cut off.

单选题发动机滑油量应在停车后30分钟内检查，此时滑油还在热态。

A、The engine oil level should be checked within 30 minutes after shutdown, while the oil is still hot.

B、The engine oil level should be checked before engine start, while the oil is cold.

C、The engine oil level should be checked at any time, regardless of temperature.

单选题发动机排气温度（EGT）在起飞时不得超过红线限制。

A、Engine exhaust gas temperature (EGT) must not exceed the red line limit during takeoff.

B、Engine exhaust gas temperature (EGT) must not exceed the red line limit during cruise.

C、Engine exhaust gas temperature (EGT) must be maintained below the red line at all times.

单选题当发动机在运转时，不要接近进气区域，以免被吸入。

A、When the engine is running, do not approach the intake area to avoid being sucked in.

B、When the engine is running, you may approach the exhaust area to check for leaks.

C、When the engine is shut down, do not approach the intake area.