【单选题】听力原文:M: Tom Haley speaking. W: Hello, Tom. It's Mary. I waited for a phone call from you but I can't wait any longer. Tell me about your first week. M: Hmm. It wasn't easy. W: Wasn't it? Why? What did...
B.
Put hundreds of bottles and tins and packets on shelves.
D.
Lifted bottles and boxes.
【判断题】液压提速道岔转辙机安装水平,紧固件、开口销、连接销、表示杆和动作杆防松螺母,无脱落、不松动。
【单选题】听力原文:W: There is a table for eight over there. I think Tom should have invited Mary to the party, don't you? M: It's none of our business. If Tom had wanted to invite her, he would have. Q: What does ...
A.
He wanted Mary to come, but she couldn't.
B.
He invited Mary to the party.
C.
He didn't invite Mary to the party.
D.
He didn't want to have a party because he was busy.
【单选题】液力机械传动机构在使用中最容易出现行走( )的故障。
【单选题】听力原文:W: There is a table for eight over there. I think Tom should have invited Mary to the party, don't you'? M: It's none of our business. If Tom had wanted to invite her, he would have. Q: What did ...
A.
He wanted Mary to come, but she couldn't.
B.
He invited Mary to the party.
C.
He didn't invite Mary to the party.
D.
He didn't want to have a party because of business.
【判断题】一个电气控制电路主要包括动力主电路和控制电路两部分。
【单选题】( )是在产业用品的买卖双方作用下形成的,是产业用品买方需求的总和。
【多选题】提升机电气控制系统中的控制回路主要包括()。
【单选题】农村中小学危房改造所需资金,由()安排。
【单选题】利用最小割集和最小径集判断重要度时,挡最小割集的基本事件不等时,基本事件少的割集中的时间比基本事件多的割集中的基本事件的重要度( )。