对受拉区Ⅱ级钢筋的绑扎接头的最小搭接长度不应小于()。
A、40d
B、35d
C、30d
D、25d
参考答案:B
________,the northerners are keen on dumplings while the southerners are fond of rice.[ ]
A. Generally speaking
B. General speaking
C. Speaking general
D. Speaking generally
集散型控制系统是如何提高系统的功能和效率?