引起滑坡的因素包括（）。
A.新修堤
B.附加荷载大
C.堤基有软弱夹层
D.抗滑能力差
E.坡度陡
参考答案：B, C, D, E
Since the shipment consists of seasonable goods, it is important that it is ______ as soon as possible.
A．deleted
B．demanded
C．delivered
D．detached
下列属于同轴电缆组建以太网方式的是
A．粗缆方式
B．细缆方式
C．粗缆与细缆混用方式
D．多集线器级联方式
