工字钢桩围护结构适用于黏性土、砂性土和粒径不大于（）mm的砂卵石地层。
A. 80
B. 90
C. 100
D. 110
查看答案
Before fi-idges came into use， it was still possible for people to have fresh foods because __________. 查看材料
A. milk， meat， vegetables， etc. were delivered
B. it has promoted the sales of many kinds of commodities
C. foods can be preserved
D. most kids like iced soft drinks
E. every housewife needs food
F. the fridge produced when it is working
将考生文件夹下TIAN文件夹中的文件ARJ．EXP设置成只读属性。
将考生文件夹下MICRO文件夹中的文件XSAK．BAS删除。
将考生文件夹下STORY文件夹中的文件夹ENGLISH命名为CHUN。
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