【单选题】某双链DNA纯样品含有15%的A,则该样品中G的含量是( )
【单选题】This method was so easy and _______ so reasonable.
【简答题】A.It has several scratches in it. B.It can't be opened in a normal way. C.The door handle is missing. D.It can't be opened at all.
【单选题】Astronauts are likely to increase in height while in space.
【单选题】The workers' promised wage increase is being ______ while it is examined by the government to see if it is greater than the law allows.
【简答题】With the hospitality(热情好客)so______(character)of these people, they opened their house to over fifty guests.
【简答题】The envelope wasnt sealed, so I opened it and found a card in it, but the inside of the card was empty.
【单选题】下列对PLC软继电器触点的配置情况描述正确的是( )。
【单选题】下列对PLC软继电器触点的配置情况描述正确的是 。