普通抹灰的外观质量要求有()。
A.表面光滑洁净
B.颜色均匀
C.接槎平整
D.灰线清晰顺直
参考答案:A, C
With drink and food ____, the farmer had to walk out of the cave. [ ]
A. run out
B. use up
C. run out of
D. using up
输液加药混合配制洁净室的净化级别应达到:
A.100级
B.1000级
C.10000级
D.100000级
E.1000000级