桥梁设计和施工中,要进行稳定性验算,当验算模板及支架在风荷载等作用下的抗倾倒稳定时,验算倾覆的稳定系数不得小于()。
A.1.5
B.2.0
C.1.3
D.2.5
参考答案:C
They are developing new types of plants that can be grown in poor soil or even sand,and that are
less to be attacked by pests and diseases.
A.possible
B.probably
C.likely
D.maybe
无缝气瓶附件包括那些?