钻进过程中立管压力表失效,数值不准确,可能会导致什么后果?
参考答案:不能正确判断井下情况,导致发生人身、设备、井下事故。
— I bought a nice MP3 yesterday. It's only$150.
— Oh, really? I spent ______ money than you. Mine is $120. [ ]
A. little
B. fewer
C. more
D. less
钢筋的加工主要包括()
A、钢筋的调直
B、配料
C、弯折成型
D、绑扎