A、 结构类别分为三类:主要的、次要的、备用的。
B、 结构类别分为三类:主要的、次要的、必需的。
C、 结构类别分为三类:主要的、次要的、第三位的。
答案：C
A、 结构类别分为三类:主要的、次要的、备用的。
B、 结构类别分为三类:主要的、次要的、必需的。
C、 结构类别分为三类:主要的、次要的、第三位的。
答案：C
A. The aircraft navigation systems provide the flight which is required by the crew,and meet the the most provisionally safety requirements.
B. The aircraft navigation systems provide the flight which is required by the crew,and meet the 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.
A. 异常程序部分在开始时应包括一份有关操作顺序的检查单,说明顺序对安全至关重要。
B. 异常程序部分应包括一份在开始操作时检查单,这样编写的顺序对飞行安全至关重要。
C. 当顺序对安全至关重要时,异常程序部分在开始时应包括一份有关操作顺序的检查单。
A. 不论怎样的“危机”大多数总是会出现需要马上快速反应的故障,比如全动力故障,着火或烟雾,或者客舱的快速释压。
B. 可是一个“危急情况”几乎总伴随着故障,需要立即快速反馈,比如一个动力装置故障,着火或烟雾,或快速客舱减压。
C. 然而,“紧急情况”几乎总是涉及需要立即和快速响应的故障,如整个动力装置失效,火灾或烟雾,或座舱快速失压。
D. C.然而,“紧急情况”几乎总是涉及需要立即和快速响应的故障,如整个动力装置失效,火
E. C.然而,“紧急情况”几乎总是涉及需要立即和快速响应的故障,如整个动力装置失效,火灾或烟雾,或座舱快速失压。
A. Visual difference is acceptable between the previous surface and the new surface.
B. There should be no visual difference between the initial surface finish and the new surface finish.
C. It is forbidden to have acoustic difference between the former surface finish and the new surface finish.
A. Set the width of the control rod as necessary.
B. Set the length of the control rod as necessary.
C. Set the height of the control rod as necessary.
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. Clean the surface with a soap and clean a water solution.
B. Use a soap-and-water solution to clean the surface.
C. Use a soap to clean the surface and a water solution.
A. 系统的这一部分用来消除或防止螺旋桨结冰。
B. 系统利用这个部分来解除或阻止叶轮上的冰形成。
C. 这个部分的系统用来排除或阻止冰在推进器上面形成。
A. 在搅拌均匀后,一小时内不可使用该溶液。
B. 如果摇晃溶液,请等待一小时后再打开。
C. 如果晃动了溶液,一小时内请不要使用。
A. Replace broken clamp with new clampwith reference to standard practices and AMM and relieve rubbing with the bundle at floor bar cut at body station 360.
B. Replaced broken clamp with a new clamp diminishing rubbing at floor beam cutout at body station 360 with reference to standard practices and AMM.
C. According to the standard practices and AMM,the damaged clamp at the body station 360 was replaced to eliminate the friction between the wire bundle and the cutout of the floor beam at this place.
