检查内曲面刮削质量，校准工具一般采用与其配合的（）。
A.孔
B.轴
C.孔或轴
参考答案：B
_______ the help of this new type of calculator, people will be able to _______ much faster
with more accurate figures as a result. [ ]
A. With; calculate
B. Under; work out
C. By; make out
D. For ; count
拆管前必须关闭支架来液方向的系统（）。
A.电源
B.液压
C.截止阀
D.按钮
