使用电剪刀作小半径剪切时须将两刃口间距离调到()mm。
A.0.2~0.3
B.0.3~0.4
C.0.4~0.5
参考答案:B
0.5x-9=12,则x=______.
____ of the two new books are interesting. [ ]
A. All
B. Both
C. Any
D. Either