A、 The aircraft navigation systems provide the flight, which is required by the crew, and meet the most provisionally safety requirements.
B、 The aircraft navigation systems provide the flight, which is required by the crew, and meet the most appropriate safety requirements.
C、 The aircraft navigation systems provide the crew with the data required for flight within the most appropriate safety requirements.
答案：C
A、 The aircraft navigation systems provide the flight, which is required by the crew, and meet the most provisionally safety requirements.
B、 The aircraft navigation systems provide the flight, which is required by the crew, and meet the most appropriate safety requirements.
C、 The aircraft navigation systems provide the crew with the data required for flight within the most appropriate safety requirements.
答案：C
A. 风扇有自动开关用以保护风扇过热受损。
B. 风扇有保护电门用以防止风扇过度受损。
C. 风扇有热电门用以避免风扇过热受损。
A. The clamp should be in the same position with the nut.
B. The clamp should be at the same direction with the nut.
C. The clamp should have the same distance with the nut.
A. Those units means that they can prevent it from eroding.
B. Those units provide a method of deicing.
C. Those units provide a way to prevent the formation of ice.
A. 确保不要使用不相关的单词,因为这将改变短语动词的意思。
B. 确保不要将无关的单词连在一起,因为这会改变名词词组的意思。
C. 确保不要连用意思相反的单词,因为这会改变固定搭配的意思。
A. 在接触到升降舵调整片后缘时,将指示器归零
B. 在指示器接触到升降舵调整片前缘时,将指示器归零
C. 当连接到升降舵调整片前缘时将,指示器一次性归零
A. 机组能用飞行指令需求来控制飞机的姿态。
B. 机组能用飞行指引指令来控制飞机的高度。
C. 机组能用飞行指引指令来控制飞机的姿态。
A. When you try to change a word, make sure that the substitute you choose doesn＇t replace the meaning of the sentence.
B. Make sure that the chosen replacement word will not vary the implication of the sentence if you replace a word.
C. When you replace a word, always make sure that the alternative you select does not change the meaning of the sentence.
A. Put down a face mask and protective clothing.
B. Put on a face goggle and protective clothing.
C. Put on a face mask and protective clothing.
A. Substitutes with different quality can be used.
B. You can not use substitutes with same quantity.
C. Equivalent substitutes are permitted to use.
A. The airworthiness and safe operation of an airplane is assured if it＇s used as its original design purpose, properly inspected and carefully maintained.
B. The manufacturer is intended to utilize an airplane with sound inspection and maintenance practices because that is the basis for assuring the airplane remains airworthy and safe to operate.
C. The airplane is designed to be used as the manufacturer＇s intention. Users shall properly inspect the airplane and do sufficient maintenance to assure its airworthiness and operation safety.
