急拉氧气面罩来获取氧气。

A. 它有一个简单的轴承并且操作在一个常规的速度。

B. 它有一个简单的轴承并且以恒定速度运转。

C. 它有单轴并且以恒定速度运转。

A. Refer to FIG. 401 for the distance between rivets.

B. If you want to know the distance between bolts, refer to FIG. 401.

C. Look at FIG. 401 for the dimension between bolts.

A. Make sure that the bolts are tight.

B. Make sure that the screws are securely installed.

C. Make sure that the bolts are loose.

A. 编号应成数字级数排列，以章节号为前缀。

B. 编号应冠以章节号，按数字顺序排列。

C. 以章节号开头，数字大小排列。

A. 位于连接发电机和驱动组件的法兰上的端口，使滑油在恒定转速驱动器和可用发电机之间流动。

B. 位于连接发电机和驱动组件的连接处的端口，使滑油产生了在变速驱动器和发电机之间流动的可能性。

C. 端口位于连接发电机和驱动组件的法兰上，使滑油可以在恒速驱动器和发电机之间流动。

A. 当灯点亮时，它能够启动后视反光镜。

B. 当灯点亮时，它能够照亮后反光镜。

C. 当灯点亮时，它能够显示在后视反光镜上。

A. That portion of the system is used to indicate the quantity, temperature and pressure of the oil.

B. That portion of the system is used to indicate the quality, temperature and pressure of the oil.

C. That portion of the system is used to indicate the quantity, temperature and pressure of the fuel.

A. 如果重量或力臂的差异不重要，则整体装置的所有部件可组合成一个设备清单项。

B. 当构成某组件的各零件的重量或相对于重心的力臂并不显著时，可在清单中将所有零件作为一个设备项列出。

C. 如果重量或力臂的变化不显著，则所有安装的部件可组合成一个设备清单项。

A. Operator is in charge of the maintenance of the handbook.

B. The handbook should be kept current by the operator.

C. The operator should store the handbook in a proper status.

A. The condenser decreases the temperature of the air in the air conditioning pack to below the dew point, changing water vapor into liquid.

B. The cooler lowers the air temperature to the boiling point in the air conditioning module, which can transfer the steam into water.

C. The evaporator turns steam into liquid by reducing the temperature of the air in the air conditioning pack to the evaporating point.