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【单选题】
193） 在车辆，农业机械不能到达的山坡、峭壁和岩石处，加强线最大时距地面的高度不得小于( )。A.
（A）4m
B.
（B）5m
C.
（C）6m
D.
（D）7m
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【单选题】_____ more energy to my studies instead of to online games, I would be sitting in a comfortable office now.
A.
Were I devoted
B.
Had I devoted
C.
Would I devote
D.
Should I devote
【单选题】Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45. The third of March, 1887, three months before l was seven years old, was the mo...
A.
less than seven
B.
over seven
C.
just six
D.
a little, over six
【简答题】当多个用户的( )同时存取或修改数据库时，可能发生相互干扰而得到错误的操作结果或死锁。 A)应用程序 B)并发进程 C)操作 D)数据库
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