×
单选题
如果划痕没穿透保护层，这个装置是可使用的。
A
A.If the scratch does not go through the protective layer, the unit is serviceable.
B
B.If the nick does not go through the primary surface, the unit is serviceable.
C
C.If the scratch does not go through the protective surface, the unit is movable.
答案解析
正确答案：A
相关知识点：
划痕未穿透保护层装置可用记准
相关题目
单选题
It is a must to check the relevant pump when metal chips are found.
单选题
The ignition unit is cooled by the air taken from the fan duct.
单选题
Drains let fuel in the vent system return to the tanks.
单选题
The microprocessor cards are interchangeable.
单选题
To obey the regulations is very important for aircraft maintenance activity.
单选题
The system to be tested operated abnormally during last flight leg.
单选题
The next check interval is based on the inspection results of this time.
单选题
Remove the remaining sealant.
单选题
Open the circuit breaker.
单选题
Do not use other verb tenses that are not approved.
