Sweat damage will occur in a cargo hold containing machinery parts when().
A. the outside air is colder than the cargo
B. the air temperature of the hold is higher than the outside air temperature
C. the dew point of the hold is higher than the temperature of the cargo
D. the dew point of the outside air is lower than the temperature of the cargo
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1955年法国经济学家佩鲁在分析经济发展中的不均衡问题时,提出了“()”理论。
由凹圆弧和凹圆弧及平面组成的成型工件,当用轨迹法磨削时,通常应先磨削().
A. 平面
B. 凹圆弧
C. 凹圆弧
D. 任意面
在OS模式下,临时限速控制无效。
A. 正确
B. 错误