高速公路监控系统可以完成()。
A.信息采集
B.信息发布
C.收费管理
D.信息处理
参考答案:A, B, D
We have finished the work in time __________ your help.So we are very grateful for that.Which of the following is NOT proper?
A.thanks to
B.because of
C.as a result of
D.leading to
电梯井口必须设防护栏杆或固定栅门,电梯井内应每隔两层最多隔()设一道安全网。
A.8m
B.9m
C.10m
D.12m