问题 多项选择题

以下关于盾构过站、掉头及解体的规定中,正确的是()。

A.过站、掉头托架或小车的强度、刚度和稳定性应满足需要

B.盾构过站、掉头应观察盾构转向或移动状态

C.举升盾构机应同步、平稳

D.牵引平移盾构应缓慢平稳,钢丝绳应牢固

E.盾构解体前应关闭各个系统,各个部件应支撑牢固

答案

参考答案:A, B, C, D, E

写作题

书面表达。

    美国学生Sam 最近又来到了北京,去了王府井,发现这里发生了巨大的变化。请你以Sam身份给他

父母写一封信,介绍王府井发生的变化。字数80左右,信的开头及结尾已给出。

     提示词:1. happy, visit, again 2. change, take place 3. Wangfujing Street, building, shop, market

                   4. flower, poster (宣传画), put, for, the Olympics

Dear Mum and Dad, 

                                                                                                                                                          

                                                                                                                                                          

                                                                                                                                                          

                                                                                                                                                 Yours,

                                                                                                                                                 Sam

单项选择题