设置专业技术岗位,要在( )的基础上,确定高、中、初级专业技术职务的合理结构比例。
A.确定人员数量
B.确定人员职称
C.定编定员
D.确保高级技术人员占优势
参考答案:C
— You _______ for me this morning. I came over here with Michael in his car.
— Well, why didn’t you let me know earlier?
A.should have waited
B.would have waited
C.couldn’t have waited
D.needn’t have waited
VOR接收机可直接向飞行员提供信息()
A、飞机的航向和航向偏离
B、VOR方位和航道偏离
C、飞机的磁方位和航道偏离
D、飞机的航迹和航道偏