《常用危险化学品分类及标志>(GB 13690-2009) 按其健康、环境和物理危险对物质和混合物进行分类,分为( )类。
A.6
B.7
C.3
D.9
参考答案:C
病室内设避污纸的目的是()。
A.取避污纸时,不可掀页撕取,应从页面抓取
B.避污纸用后立即弃于污物桶内,集中焚烧处理
C.用避污纸开关门窗,可省略消毒双手
D.患者服药后,可用避污纸取回药杯
E.注射时用避污纸,可保护护士的手不被污染
—They started working on the show two months ago, didn’t they?
—___________. A lot of work needed to be finished before the show.
A.Yes, they did
B.No, they didn’t
C.Yes, they didn’t
D.No, they did