管道严重振动的原因是主蒸汽管（）造成的。A、没有止回阀B、没有疏水阀C、没有回流阀D 发布时间：2017-08-14 11:18 │ 来源：www.tikuol.com 题型：单项选择题 问题： 管道严重振动的原因是主蒸汽管（）造成的。A、没有止回阀B、没有疏水阀C、没有回流阀D、没有减压阀
题型：单项选择题 阅读短文，从方框中选择适当的词并用其正确形式填空，使短文意思通顺完整。请将答案写在下面题号后的横线上。每空限填一词，每词限用一次。方框中有两个词是多余的。Later trousers I sing one if watch old in big father when Michael Jackson was born in Indain, America, on Aguest 29, 1958. He was the seventh of the nine children 1 his family. His father, Joe Jackson, set up the family band "The Jacksons". It 2 became "The Jackson 5". Little Michael always 3 his brothers practice singing. when he was about 5 years 4 he joined the group and became the lead singer of "The Jackson 5". Michael's first public show was at a school program in his 5 grade in 1963. Weaing black 6 and a white shirt, he sang Climb Evry Moutain. Michael said,"Everybody gave me a big hand 7 I finished singing. I just couldn't believe it. I didn't think I had done anything special. I was just 8 the way I sang at home every night. I just open 9 mouth and sing". Michael's father was very strict with his sons. With their 10 help, Michael and "The Jackson 5" Started collecting trophies (奖杯) at talent shows.1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 查看答案