L1登机门飞行机组位置救生衣未安装。

A. Do this procedure again.

B. Repeat this procedure.

C. Do this procedure two times.

A. 液压油会造成起火。

B. 液压油会引起腐蚀。

C. 液压油会导致伤害。

A. 如果湿度频繁地变化，在装置上盖上盖子。

B. 如果温度经常改变，在部件上铺上覆盖物。

C. 如果人为地频繁改变，在部件上贴上封签。

A. The connector has 32 contacting points.

B. The contact has 32 contactors.

C. The contactor has 32 contacts.

A. Caution notes regarding possible hazards of using authorized and unauthorized cleaning agents shall be included.

B. Caution notes regarding use of unauthorized cleaning agents and possible hazards of using authorized ones shall be included.

C. Caution notes regarding use of authorized cleaning agents and possible hazards of use of unauthorized ones shall be included.

A. 应说明最小机组人数，以及如果需要一名以上飞行机组人员时，还应说明每个机组人员的职责。

B. 需要一名以上飞行机组人员时，应说明最小机组人数和每个机组人员的职能说明。

C. 请按要求说明机组成员人数，以及每位机组成员的职能。

A. Before restarting the engine, make sure to clear the ground from any fuel spills.

B. Remove all spilled fuel from the ground before making the first attempt to start the engine.

C. Ensure that no fuel on the ground is eliminated before proceeding with engine startup.

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. This procedure is only void in digital mode.

B. This procedure is only valid in digital mode.

C. This procedure is only ineffective in digital mode.

A. The mechanic removed the cable roller and examined the surrounded area in detail. No other defects were found.

B. The mechanic removes the cable rotor and examines the adjacent area in detail. No other defects are noted.

C. The mechanic removed pulley and inspected the surrounding area in detail with no other defects found.