What will NOT be found on the Certificate of Inspection of an ocean going tanker?()
A. Manning requirements
B. Minimum freeboard permitted
C. Grade(s) of cargoes that the vessel may carry
D. Waters upon which the vessel may be operated
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检修高压电动机和启动装置时,应做好防止被其带动的机械(如水泵、空气压缩机、引风机等)引起电动机转动的措施,并在阀门(风门)上悬挂“在此工作!”的标示牌。
A. 正确
B. 错误
下列晶体中熔点最高的是()。
A. NaBr
B. SiO2
CCl4
D. MgO