A、 The Boeing 747 symbolizes the beginning of a new ear in air transport.
B、 The Boeing 747 is the first type of airplane in air transport.
C、 Modern air transport started from the Boeing 747.
答案：A
A、 The Boeing 747 symbolizes the beginning of a new ear in air transport.
B、 The Boeing 747 is the first type of airplane in air transport.
C、 Modern air transport started from the Boeing 747.
答案：A
A. Make a little oil to the threads of the two bolts.
B. Apply a small quantity of oil to the threads of the two bolts.
C. Apply a small quantity of oil to the threads of the two nuts.
A. The air conditioning cooling system supplies cooled air to the cabin.Includes items such as the cooling unit,indicating systems related to the cooler operation,etc.
B. The air conditioning cooling system supplies cold air to the passenger cabin.Includes items such as the cooling unit,indicating systems related to the cooler operation,etc.
C. The air conditioning cooling system supplies cooled air to the passenger cabin.Includes items such as the cooling pack,indicating systems related to the cooler operation,etc.
A. 警告:确保饮用水系统未加压。加压系统可能会造成人身伤害。
B. 注意:确保供应水系统没有压力。加压的系统会造成人身伤害。
C. 警告:确保整个水系统未加压。加压系统可能会造成人身伤害。
A. 盖子朝下的时候,是开关在开位的一种保护。
B. 封面在下面的时候,是开关在开位的保险。
C. 盖子朝下的时候,是开关在开位的保险。
A. As necessary,use the applicable SAFETY BARRIERS,classified by the operator's instructions and your local regulations.These communications are subjected to atmospheric interference and difficult to understand.
B. Use the applicable SAFETY BARRIERS,specified by the operator's instructions and your local regulations if necessary.These communications are affected by the atmosphere and difficult to understand.
C. Use the applicable SAFETY BARRIERS,classified by the operator's instructions and your localregulations if necessary.These communications are subjected to atmospheric interference and difficult to understand.
D. C.Use the applicable SAFETY BARRIERS,classified by the operator's instructions and your localregulations if necessary.These communications are subjected to atmospheric interference and difficult to understand.
A. 确保区域测试没有人。
B. 确保测试区域没有人。
C. 确定任何人可以进入考试区域。
A. If this specification is written in professional terms,the problems won't arise.
B. This specification agrees with recognized industry practices,and the problems can't be avoided according to this specification.
C. If this specification is written in professional terms,the problems will be treated adequately.
A. 应有图标来显示起落架锁、舵面锁、堵头堵盖、系留点等的位置。
B. 应有图标来显示起落架锁、舵面锁、堵头和蒙布、系留点等的位置。
C. 应有图标来显示起落架锁和舵面锁,堵头堵盖,系留点位置等信息。
A. 技术动词是指示性的词汇,提供有关特定技术和操作的信息。
B. 技术动词用于描述指示和信息,以适用于特定的技术和操作环境。
C. 技术动词在特定的技术和操作语境中给出指示和信息。
A. 这会导致组件的机械性能的恶化。
B. 这会导致组件的机械部件的变形。
C. 这会导致组件的机械装置碰撞。
