直接费的组成是直接工程费和（）。
A.规费
B.措施费
C.财务费
D.税费
参考答案：B
— It's raining hard and we can't go picnicking today.
— If only the weather _____ fine![ ]
A. is
B. were
C. had been
D. would be
机舱吊运作业时要始终保持平稳，不得突然（）
A、改变速度
B、急停
C、改变方向
D、受力
