A、 If the unit is not modified,its service life will be possibly shorter.
B、 Without the modification of the unit,its service life is likely shorter than present.
C、 Without the modification,it is possible that the service life of this unit will be shorter than usual.
答案：C
A、 If the unit is not modified,its service life will be possibly shorter.
B、 Without the modification of the unit,its service life is likely shorter than present.
C、 Without the modification,it is possible that the service life of this unit will be shorter than usual.
答案：C
A. Mach digit is the percent of true airspeed to the speed of sound.
B. Mach number is the ratio of true airspeed to the speed of sound.
C. Mach number is the proportion of real airspeed to the speed of light.
A. 打开客舱的一扇门,确保客舱不是全封闭的。
B. 打开客舱入口的一扇门,确保客舱没有增压。
C. 打开通往客舱的一扇门以保证通行没有压力。
A. Make sure that the flaps are retracted and the aileron trim handwheel is in the zero position.
B. Ensure that the flaps are partially extended and the aileron trim handwheel is centered at zero.
C. Make sure that the flaps are raised and the aileron trim handwheel is set to non-zero position.
A. Emergency Lighting is a independent subsystem used to provide illumination in case of primary electrical power failure.
B. Urgency Lights that supply the lights when the major electronic power fails is a separate subsystem.
C. Ambulance Lights is used to supply lights if the main electrical sources malfunctions as an independent subsystem.
A. This compound is poisonous.
B. This composite is toxic.
C. This agent is volatile
A. Use a minimum of 20 words in each sentence.
B. Use a maximum of 20 words in each sentence.
C. Use more than 20 words in each sentence.
A. 在可能的地方,将分号从定义和核准示例文本中删除是可行的。
B. 在可能和不得已的情况下,将标记符号从定义和示范示例的文本中删除。
C. 在可能和可行的情况下,将引号从定义和批准示例的文本中删除。
A. 根据 FAR 43 部的要求,持证飞行员可以拥有或驾驶载客飞机,并可以对其飞机实施限制范围内的预防维护。
B. 持有或驾驶航空器的持证飞行员由 FAR 43 部授权对其进行特定的预防维护。
C. 如果持证飞行员拥有或驾驶的飞机不用于航空承运目的,他可以按照 FAR 43 部授权,对飞机进行有限的预防性维护。
D. C.如果持证飞行员拥有或驾驶的飞机不用于航空承运目的,他可以按照 FAR 43 部授权,对飞机进行有限的预防性维护。
A. It includes items such as audio selector control panel,microphones,head- phones,cockpit loud speakers,etc.
B. It includes items such as automatic selector control panel,interphones,head- phones,cockpit loud speakers,etc.
C. It includes items such as audio selector control panel,microphones,head- phones,cockpit speakers,etc.
A. Each manufacturer is expected to abide by the Specification content and arrangement without any deviation in order to reasonably achieve the objectives of this Specification (enhance safety,reduce efforts,minimize costs).
B. It is mandatory that each manufacturer adhere to the Specification content and arrangement to achieve the objectives of this Specification (enhance safety,reduce efforts,minimize costs).
C. Each manufacturer is expected to adhere to the Specification content and arrangement reasonably so as to enhance safety,reduce efforts,and minimize costs which are the objectives of this Specification.
