差旅费报销单按格式的不同分类，属于原始凭证中的（）。 A．外来凭证 B．通用凭证 C

（2a+1）²=______．

He asked me, “Did you see my sister last night?”

----He asked me __________

A．if I had seen his sister the night before.

B．whether I had seen your sister the night before.

C．did I have seen his sister the night before.

D．that I saw his sister the night before.

转炉计算机动态控制

蛙夯操作必须有( )个人。

A．1
B．2
C．3
D．4

管理干系人期望过程属于（）。

A.启动过程组

B.规划过程组

C.执行过程组

D.监控过程组