当临边栏杆所处位置有发生人群拥挤、车辆冲击或物体碰撞等可能时,应采取何种措施()
A.设置双横杆
B.加密柱距
C.加大横杆截面
D.加设密目式安全网
E.增设挡脚板
参考答案:B, C
When crossing a front,isobars tend to().
A.change from smooth curves within the air mass to sharp bends at the front
B.change from sharp bends within the air mass to smooth curves at the front
C.pass smoothly across the front with no change
D.become closer together at the front and pass through in straight lines
智能具有五个特征,分别为()能力、自适应能力、()能力、表达能力和感知能力。