单选题 用肥皂和水的溶液清洗。

A、 Use a solution of foam and water to clean.
B、 Clean with bleach and water.
C、 . Clean with a solution of soap and water.
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单选题 如果电缆扭曲,断开两个电插头。

A、. If the cable twists, disconnect the two connectors.
B、If the wire bents, break the two connectors.
C、If the cable wire breaks, disconnect both ends of the connectors.

单选题 将该步骤执行两次。

A、Do this procedure again.
B、Repeat this procedure.
C、Do this procedure two times.

单选题 将 1 号自动定向仪调谐至已知频率。

A、Turn ADF 1 to unknown frequency.
B、Tune ADF 1 to a known frequency.
C、Tune VOR 1 to a known channel.

单选题 尝试移动驾驶杆。

A、Try to move the control column
B、Move the control column momentarily
C、Try to move the control column forward.

单选题 旋转门把手直到下面的门被抬起。

A、Turn the handle of the door until the lower gate is lifted
B、For lowering the upper door, door handle should be turned.
C、. The lever of door should be turned until the lower door opens.

单选题 确保指示器显示的数值正确。

A、Make sure that the indicated value is correct.
B、Make sure that the value shown on the controller is right.
C、Make sure that the value shown on the indicator is correct.

单选题 文本应尽可能简明扼要。

A、Text shall be as brief and concise as practicable.
B、The text is simple and clear for readers.
C、When preparing the text, it must be easy and relevant.

单选题 涂三层底漆。

A、Apply three layers of coating.
B、Apply three layers of primer.
C、Apply three layers of bottom primer.