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搜题
【单选题】
气体灭火系统安装时，管件应采用锻压钢件（）A.
内镀锌
B.
外镀锌
C.
内外镀锌
D.
以上三种均可
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皮皮学刷刷变学霸
举一反三
【单选题】The retiring professor made import ant achi evements in researc h and was __________ by hi s colleagues.
A.
evaluated
B.
ex alted
C.
fascinated
D.
examined
【单选题】( ) is the process to check the ex-import goods in the fields of quantity, quality, package and original place to product, as well as the condition of safety and hygiene.
A.
Commodity inspection
B.
Customs declaration
C.
Examination for the goods
D.
Examination for needs
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