当振动值大于()单位,下次飞行前要进行排故。
A.1
B.2
C.3
D.4
参考答案:C
How soon will you start your journey?
I’m not sure. I haven’t decided ______.
A.when shall I ask the boss for leave
B.where I will go to spend the holiday
C.wether I would go by train or by plane
D.who could invite me to go
社会的政治经济对教育的制约作用不包括( )
A.制约着教育的目的 B.决定着教育的领导权C.决定着教育发展的规模和速度 D.影响和制约着受教育权的分配