A、 If a supply shutoff valve was closed within five minutes,no maintenance performance is needed and shutoff periods are not accumulated.
B、 Maintenance action is not necessary and shutoff periods are not calculated unless the shutoff valve was closed for less than five minutes.
C、 When a supply shutoff valve was closed for five minutes,maintenance action is hardly requiredand shutoff duration are not included.
D、 C.When a supply shutoff valve was closed for five minutes,maintenance action is hardly requiredand shutoff duration are not included.
答案：A
A、 If a supply shutoff valve was closed within five minutes,no maintenance performance is needed and shutoff periods are not accumulated.
B、 Maintenance action is not necessary and shutoff periods are not calculated unless the shutoff valve was closed for less than five minutes.
C、 When a supply shutoff valve was closed for five minutes,maintenance action is hardly requiredand shutoff duration are not included.
D、 C.When a supply shutoff valve was closed for five minutes,maintenance action is hardly requiredand shutoff duration are not included.
答案：A
A. The maximum distance between the plate edge and the frame is inferior to 0.05 mm.
B. The clearance between the boundary of the panel and the bay can not exceed 0.05 mm.
C. The distance between the edge of the panel and the partition must not be more than 0.05 mm.
A. Carry on with the test if the pressure supply is not available.
B. Ignore the test if the pressure supply is strengthened.
C. If the pressure supply stops,cancel the test.
A. 描述飞机燃油系统时,应解释燃油测量系统并阐述检测和校对的需要。
B. 描述飞机燃油系统时,应解释燃油计量系统并阐述检查和修正的需要。
C. 描述飞机燃油系统时,应说明燃油测量系统并阐述监控和校正的必要性。
A. 将电缆折成相等长度的三段。
B. 将电缆剪成相等厚度的三段。
C. 把电缆剪成长度相等的三段。
A. Functional check L VHF radio found statis interference and noise.
B. Functional check of L VHF radio shownturbulence and static noise.
C. Functional check of L VHF radio revealed interference of static with noise.
A. The wing tanks and the center tank have the same rate of supply of fuel.
B. The rate of supply of fuel from the wing tanks to the center tank is equal.
C. The fuel supply rate from all wing tanks and the center tank is the same.
A. STE 规范表达内容的方式,但不规范格式(例如,字体、编号等)。
B. STE 管理规范的内容而不是格式 例如(字号,编码等)。
C. STE 被用于规范内容的形式而不是版式( 例如字号,数字等)。
A. Proper recipe shall be adopted to measure the pressure.
B. The pressure shall be estimated by using accurate equation.
C. Calculate the pressure with the applicable formula.
A. Collect all maintenance records for the part PNxxxx.
B. Compile all maintenance logs for the component PNxxxx.
C. Collect all flight logs for the component PNxxxx.
A. 噪音隔绝器通过产生废气来降低噪音。
B. 噪音吸收器通过排气来减小噪声。
C. 噪声抑制器降低废气产生的噪声。
