巴黎系统的标称剂量率是基准剂量率的()
A.95%
B.90%
C.85%
D.80%
E.75%
参考答案:C
--- It’s so cold today. Would you mind my ____________ the door?
--- ____________. Do it as you like.
A.to close; Not at all
B.closing; Never mind
C.closing; Certainly not
D.to close; Better not
工程项目采用公开招标的,在招标阶段的主要工作内容有()。
A.编制招标文件
B.发布采购公告或发出投标邀请
C.办理投标保函
D.确定采购机构和采购需求
E.组织召开标前会议