1399. The first step in listing possible causes of each trouble is to show what sections of the system may be at fault

A. 旋转盖子直到接近干斤顶并标记“+””和“-”

B. 旋转盖子,直到你能接触到插口上“+””和“-”的标记

C. 转动盖子直到可以接近标有“+””和“-”的千斤顶。

A. Each wire is comprised by an alphabetical code following 2 alpha digits and 2 numerical digits.

B. Each wire is identified by an alphanumerical code comprising 2 alpha digits followed by 2 numerical digits.

C. Each wire consists of an alphanumerical code following 2 alpha digits and 2 numerical digits.

A. 步骤2只适用于潮湿的情况。

B. 步骤2只适用于潮湿的布。

C. 步骤2只适用于潮湿的天气。

A. You do not need to give the return processes in its entirety unless you need to comprehend the system.

B. Unless you need to comprehend the system,do not need to fully show the return lines.

C. Return lines need not be shown completely if the system need not be realized.

A. 按要求把喷射器组件的喷嘴安装在APU进气道内。

B. 按要求把喷射器组件的接头安装在APU进气道内。

C. 按要求把作动器组件的喷嘴安装在APU进气道内。

A. 故障隔离手册提供的信息可以用来标识,定位和纠正可能在飞机上发生的任何故障。

B. 故障隔离手册提供信息用于标识、定位和修正已经在飞机上发生的任何故障的信息。

C. 飞机士出现的任何故障信息都可以参照故障隔离手册提供的标识来定位并排故。

A. To help the tracing circuit, we need to build trunk wire recognition code.

B. Separate wire identification codes are built to assist in tracing circuits.

C. Unitive wire identification codes provide assistant in tracing circuitry.

A. Static discharger attached to the flight control surface is used to discharge static electricity which builds up as air flows across the surface.

B. Static discharger attached to the aircraft fuselage is used to discharge static electricity which builds up as air flows across the surface.

C. Static discharger attached to the flight control surface is used to discharge direct current electricity which builds up as air flows across the surface.

A. 在某种情况下,戴护目镜

B. 在某种情况下,戴防护服

C. 在某种情况下,戴呼吸设备

A. Rub the surface slowly with a soft, dry cloth

B. Rub the surface quickly with a soft, dry cloth

C. Rub the surface with a soft, dry cloth