【单选题】商务签字仪式中,签字桌一般要铺( )的台呢布。
【判断题】In the presence of oxygen, the most energetically stable form of carbon is CO 2 and that of hydrogen is H 2 O.
【单选题】铸造主要包括砂型铸造、( )铸造等方法。
【单选题】When I got to the company, the meeting__________ for five minutes.
【单选题】In our company, only a few are for the decision, but the rest ______ all against it.
【判断题】用型砂紧实成型的铸造方法称为砂型铸造。砂型铸造是应用最广泛的一种铸造方法,其主要工序包括:制造模样,制备造型材料、造型、造芯、合型、熔炼、浇注、落砂、清理与检验等。