1231. 起落架位置对失速速度没有影响

A. Isolate the device that is faulty, and remove the failure;

B. Isolate the faulty device, and eliminate it from the section;

C. Isolate the unit that is at fault, and correct the cause of the trouble;

A. 一般而言,当手册中小部分页数受到影响时,受影响部分应准备修订。

B. 一般而言,当手册中有小部分内容受到影响时,应准备修订。

C. 一般而言,当手册的总页数中有一小部分受到影响时,应准备修订。

A. 不要安装精度超过0.01mm的垫片。

B. 不要安装厚度超过0.01mm的填隙片。

C. 不要安装高度超过0.01mm的对垫。

A. 从油箱上拆下油箱的连接件。

B. 拆下油箱且从油箱安装连接件。

C. 拆下油箱和油箱上的连接件。

A. More sophisticated detectors provide a digital output in parts per million of carbon monoxide present or illuminate a light or an audible alarm sounds.

B. Multiple precise detectors provide a digital output to light a light or sound a warning sound in areas where carbon monoxide levels exceed limits.

C. Multiple physical detectors provide a partial digital output of carbon monoxide content per 100000 parts, either lighting up one or sounding a warning tone.

A. Before you refuel the aircraft, a small quantity of oil comes out of the vent line.

B. When you refuel the aircraft, a small quantity of fuel comes out of the vent line.

C. After you refuel the aircraft, a small quantity of fuel comes out of the vent line.

A. 在两个点之间做标记

B. 在两条线的交点处钻孔

C. 检查交汇处的孔

A. 将孔铰成比标准尺寸大 0.20 英寸。

B. 将孔铰成比标准尺寸大 0.20 英尺。

C. 将孔定位成比标准尺寸大 0.20 英寸。

A. Be patient when door is opening.

B. Be aware of when door is opening.

C. Be careful when door is opening.

A. When you change a word with the alternative, you must ensure that the meaning of the sentence varies.

B. The meaning of the sentence can be different when you use the alternative you select to replace a word.

C. Always keep the same meaning of the sentence when you use the alternative to replace a word.