空中交通管制员应当根据仪表飞行规则的条件,配备()间隔。
A.垂直
B.纵向
C.侧向
D.A、B和C
参考答案:D
He was disappointed to find his suggestion_______.
A.turning down
B.turned down
C.to be turned down
D.to turn down
本病例的代表方为
A.补天大造丸
B.归脾汤
C.月华丸
D.参苓白术散
E.四神丸