供应室的空气卫生学标准为( ) A．空气细菌菌落总数≤10cfu/m3

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问题单项选择题

供应室的空气卫生学标准为( )

A．空气细菌菌落总数≤10cfu/m³
B．空气细菌菌落总数≤100cfu/m³
C．空气细菌菌落总数≤200cfu/m³
D．空气细菌菌落总数≤400cfu/m³
E．空气细菌菌落总数≤500cfu/m³

答案

参考答案：E

选择题

In order to gain a bigger share in the international market, many state-run companies are striving ______

their products more competitive. [ ]

A. to make

B. making

C. to have made

D. having made

填空题

宏病毒寄存在______中。