夜间道路环境对安全行车的主要影响是()。
A.驾驶员视野受限
B.交通状况复杂多变
C.驾驶员体力下降
D.气温低
参考答案:A
This information allows businessmen to keep of their list of goods by showing which items are being sold and how fast they are moving.
A.sight
B.track
C.touch
D.sign
工程上以()作为计算填挖土石方数量的依据。
A.路基横断面图
B.路线平面图
C.路线纵断面图
D.平曲线要素