【单选题】GB 150-1998《钢制压力容器》是中国压力容器方面一部十分重要的()国家标准。
【单选题】在GB150-1998(钢制压力容器》中,低温容器是指()。
【单选题】You'd better not ask him for help. He will not try his best _____he agrees to help you.
【单选题】( )不属于抽烟式自动探火及报警系统的组成部分。
【单选题】—May I ask you some questions? —______. [ ]
【单选题】- Excuse me, Sir. Could you please tell me the way to the Bird Nest? - ________ . I am new here. You'd better ask someone else.
【单选题】GB150《钢制压力容器》是中国第一部压力容器标准,现行为( )版。
【单选题】下列标准号的标准名称是:GB150-1998()
【单选题】「田中さん、明日のパーティーに出席しますか。」「ええ、そうする ( )です。」
【单选题】You'd better not ask for help. She will not try her best _____ she agrees to help you.