问题
单项选择题
当CRH2C型动车组牵引系统故障，切除50%牵引动力时，（）。
A.须保持300km/h速度运行
B.须限速160km/h运行
C.不能运行
D.须限速200km/h运行
答案
参考答案：B
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当CRH2C型动车组牵引系统故障，切除50%牵引动力时，（）。
A.须保持300km/h速度运行
B.须限速160km/h运行
C.不能运行
D.须限速200km/h运行
参考答案：B
| 词汇运用. |
| 1．I'm sorry,but I didn't mean to ________(使你心烦)． 2．Ignore the bell and go somewhere quiet to ________(使你朋友平静下来)． 3．Rescuers ________(关心) the safety of the men trapped in the fire. 4．We are surprised at ________(他对法律的忽视)． 5．Any student caught ________(作弊) in the exam will be punished. 6．The kids________(疯狂) when the film star appeared. 7．We ________(共有) the same interest and she ________(分担) my troubles as well. 8．The war brings so much ________(痛苦) that people are eager for peace. 9．Having done something wrong,he ________(不敢) go home. 10．The heavy snow prevented all the ________(与……的联系) the outside world. |