柴油发电机房室内应保持通风良好,室内温度应保持在( ),室内严禁用火和吸烟。
A. 2~5℃
B. 8~10℃
C. 8~40℃
D. 10~40℃
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73()
A. putting
B. making
C. setting
D. taking
67()
A. store
B. calculator
C. bill
D. savings
The film ______ this Saturday.
A. is to show
B. is showing
C. shows
D. is to be shown
柴油发电机组进行机房布置时,通风效果达不到要求,热风出口的面积应为柴油机散热器面积的( )。
A. 1.5倍
B. 0.5倍
C. 2倍
D. 1.8倍