铁路装卸管理部门应对货场内的委托装卸实行统一管理、统一派班、统一费率、统一收费、()的“五统一”管理。
A、统一装卸
B、统一清算
C、统一出务
D、统一作业
参考答案:B
It was announced that only when the examination papers were handed in ________to go out of the classroom.
A.the students would be permitted
B.had the students been permitted
C.would the students be permitted
D.the students had been permitted
当温度不变时,一定质量气体的压强越大,则它的体积().
A、越大
B、越小
C、不变