题目内容

目前广泛应用的生物安全柜的类型为()

A. 任意型号
B. Ⅱ级B型生物安全柜
C. Ⅲ级生物安全柜
D. Ⅱ级A型生物安全柜
E. 一级生物安全柜

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抗生素类、危害药品静脉用药调配的洁净区和二次更衣室之间呈()

A. 5-lOPa的压差
B. IPa的压差
C.10-15Pa的压差
D. 2Pa的压差
E. 3OPa的压差

Cet-4-1.1-Exercise 01In a ______ of 14 studies that looked at physical activity and academic performance, investigators found that the more children moved, the better their grades were in school.

A. commitment
B. observing
C. review

Cet-4-1.1-Exercise 02Immigrant parents could talk about their country of ______ and why they emigrated to the United States.

A. origin
B. provoke
C. deals

表面粗糙度的最常用的评定指标是 RS m 。

A. 对
B. 错