蒸汽介质的压力容器运行时,操作人员要先开()防止因水击损坏设备或管道。
A.排凝阀
B.蒸汽阀
C.安全阀
参考答案:A
台虎钳的规格是以()长度来表示的,其规格有()mm,()mm,()mm。
汉译英:“空舱证书;清洁证书”,正确的翻译为:()
A.Certificate of empty tank; Certificate of fumigation
B.Certificate of fumigation; Certificate of cleanliness
C.Certificate of empty tank; Certificate of cleanliness
D.Certificate of cleanliness; Certificate of empty tank