问题
单项选择题
套筒运输装置的载荷外圈最大为()。
A.550mm
B.450mm
C.650mm
D.750mm
答案
参考答案:C
套筒运输装置的载荷外圈最大为()。
A.550mm
B.450mm
C.650mm
D.750mm
参考答案:C
第二节:书面表达(满分25分) 越来越多的中学生拥有自己的手机。手机给中学生的生活带来便利的同时也严重影响他们的学习。为此你校学生会组织全校学生以班级为单位进行了使用手机利与弊的大讨论。请你将讨论结果和你的看法写信给你美国的朋友Mike。
Dear Mike, Glad to know you are so concerned about our school life, so I’ll tell you something. A heated discussion about the advantages and disadvantages of using the mobile phone has been recently carried out by our Students’ Union. ______________________________________________________________________________________________________________________________________________________________ Yours, Li Hua |