锉削球面时,锉刀要完成(),才能获得要求的球面
A、前进运动和锉刀绕工件圆弧中心的转动
B、标准公差等级和上偏差
C、前进运动和绕锉刀中心线转动
D、前进运动
参考答案:B
My friend Miriam felt it was out of _____ question for her to visit China without going to see the terracotta warriors, so I helped her arrange _____ tour to Xi’an.
A./ ; the
B.the; a
C./; a
D.the; /
在算式□6÷7中,要使商是两位数,□最小填______;要使商是一位数,□最大填______.