《高层规范》规定，高层建筑非抗震设计时，风荷载组合值系数为()。

Biologists called on urgent protection of dolphins on account of ______.A．the widespread distribution of fishing netsB．the excessive dam construction along riversC．the rising human threat due to inconsiderationD．the deteriorated and ruined coastal ecosystems 点击查看答案

DES术语适用于下列哪种运输方式?()

A.航空运输
B.公路运输
C.铁路运输
D.海上运输及内河运输

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