对于承受静荷常温工作环境下的钢屋架,下列说法不正确的是()。
A.可选择Q235钢
B.可选择Q345钢
C.钢材应有冲击韧性的保证
D.钢材应有三项基本保证
参考答案:C
何谓潮汕“四点金”?
There are __________ students in my school. __________ students in my school is over 5000.[ ]
A. a number of, A number of
B. the number of, The number of
C. the number of, A number of
D. a number of, The number of