A320飞机发动机低压燃油关断活门的放行数量（）
A.2个
B.1个
C.0个
D.MEL放行手册里，根本就没有这一项
参考答案：B
脚手架使用中，应定期检查哪些项目？
-Look at the picture! It shows the panda Tai Shanks happy life in the USA.
--Really? Who it?
A. took B. was taking C. had taken D. has taken
