659、 收回主起落架

A. 　 Rub the basin with water.

B. 　 Flush the basin with water.

C. 　 Fill the basin with water.

A. 　 When you do maintenance on the waste water system, make sure that your gloves are put on.

B. 　 Face away from waste water system when you do maintenance on it with gloves.

C. 　 Face away from your gloves when you do maintenance on the waste water system.

A. 　不要拧紧螺母去压紧它

B. 　 不要旋转螺母去校准它

C. 　不要拧松螺母去对准它

A. 　在起飞和飞行期间,在发动机故障的情况下应对飞机采取相应措施

A. 　 Do not fuel the aircraft if the flight deck displays an engine overhead warning.

B. 　 Do not refuel the aircraft if an engine overheat warning is displayed on the flightdeck.

C. 　 Do not replenish the aircraft if the flight deck displays an engine overheat warning.

A. 　 REDUCE FLUID TO THE HYDRAULIC RESERVOIR AS NECESSARY.

B. 　 FILL THE HYDRAULIC RESERVOIR WITH FLUID AS NECESSARY

C. 　 APPLY FLUID TO the HYDRALCIC RESERVOIR AS NECESSARY.

A. 　 Misunderstanding will occur if a word is only understood by a large amount of people in a special
technical area.

B. 　 lf a word is only known by quite a small amount of people in a special technical field, there will be communication interference.

C. 　 if a word is only understood by a very small number of people in a specific technical area, it will cause
interference in communication.

A. 　当反推收回时,确保飞机远离人员

B. 　当反推放出时,确保人员远离飞机

C. 　当反推运动时,确保人员远离飞机

A. 　 Tighten the threads, nuts, clips, or connectors to the correct torque.

B. 　 Tighten the bolts, nuts, clamps, or connectors to the correct torque.

C. 　 Tighten the bolts, spacers, clips, or connectors to the correct torque.

A. 　写作规则包括语法和文体观点。字典给出了撰写人可以使用的一般词汇。

B. 　写作规则包括语法和文体方面。字典给出了撰写人可以使用的一般词汇。

C. 　写作规则包括语法和文体细则。字典给出了撰写人可以使用的全体词汇。