轴心受拉和小偏心受拉杆件中的钢筋接头,不应绑接。普通混凝土中直径大于()mm的钢筋,应采用焊接。
A.10
B.15
C.20
D.25
参考答案:D
The president's visit to Japan had a positive effect () business () science and technology between the two countries.
A.on; as well as
B.to; as well
C.about; as well
D.in; as well as
下图是我国东部某地区岩石与1月均温等值线分布图,读图,回答1—2题。
1、图中[ ]
A、甲地可能发现地下溶洞
B、乙地的河流自南向北流
C、乙丙相对高度小于1000米
D、丙地有可能发现化石
2、该区域[ ]
A、农作物熟制是一年一熟
B、自然带为亚热带常绿硬叶林
C、典型粮食作物为水稻
D、地形的形成仅受内力影响