轧制()钢时,宽展较小,不需进行准确计算。
A.板带材
B.型材
C.管材
参考答案:A
He will surely finish the job on time he’s left to do it in his own way .
A.in that
B.so long as
C.in case
D.for fear that
岩层产状200∠30中,200和30分别表示岩层的()和()。