对项目生产工艺方案进行比选的目的,是为了确定产品生产过程技术方案的()。
A.可比性
B.可行性
C.科学性
D.可靠性
参考答案:B
收费站倒班制员工因工作需要加班,每月加班最多不能超过()。
A、4天
B、4.5天
C、5天
D、5.5天
The children are having a good time, ______ with sand, others with toys.
A.some of them playing
B.some of them are playing
C.some of them
D.who playing