【单选题】We don't understand the problem _____ this is the best choice.
【判断题】分离过程可以分为机械分离和传质分离过程两大类。
【判断题】责任保险,是以被保险人对第三者依法应负的赔偿责任为保险标的的保险;当依法应负的赔偿责任发生时,保险人应依据保险合同的规定对第三人给付保险金。()
【单选题】责任保险是以被保险人对第三者依法应负的赔偿责任为: 的保险
【单选题】We don't understand the passage_____there are few new words in it.
【单选题】In some cities it is very difficult to have a telephone_____. and people have to wait a long time before they can get a phone.
【单选题】We don't understand why you object to with us.