3091. Make sure that you can hear the flight deck conversation in the headphone

A. put the insulation

B. Strip the insulation from the wire.

C. Stripe the insulation from the harness

A. 只要能简化、缩短或使文本更容易理解,就应该使用插图。

B. 无论何时都应该使用插图让文本更简洁、短小或使文本更易理解。

C. 应该使用插图当它们能简化、缩短或使文本更容易理解时。

A. Hoist the outflow valve toggle switch in the OPEN position until the outflow valve position indicator shows FULL OPEN.

B. Hoist the outflow valve trigger switch in the OPEN position until the outflow valve position indicator shows FULL OPEN.

C. Hold the outflow valve toggle switch in the OPEN position until the outflow valve position indicator shows FULL OPEN.

A. keep the cable hit the floor and make sure the floor is dry

B. Let the cable above the floor and assure the floor is moist

C. Do not let the cable touch the floor and make sure the floor is not moist

A. If you bend this part too far, it will break.

B. The part will bend if you break it too much.

C. If you bend the part too much, it will separate.

A. The user of this schematic diagram is the mechanic

B. The user of this schematic diagram is the pilot

C. The user of this schematic diagram is the flight attendant

A. 如使用全新的整流罩板,请切割整流罩板获得正确尺寸。

B. 如使用替换的整流罩板,请切割整流罩板获得正确尺寸。

C. 如使用替换的整流罩,请切割整流罩获得正确尺寸。

A. 垂尾顶部安装有垂直安定面。

B. 机身后段顶部安装有垂尾。

C. 垂直安定面安装在机身尾段顶部。

A. 水和甲醇的混合物增加了发动机的功率。

B. 水和乙醇的混合物增加了发动机的功率。

C. 水的混合物和丙醇增加了发动机的功率

A. The oil level on the sight gauge must be visible during the test

B. Make sure that you can see the oil level on the sight gauge during the test.

C. Ensure the oil level can be seen on the signt gauge during the test.