出X-R Chart用于收集原始数据的表格有哪几种?
参考答案:
1.Tester data sheet;
2.Product data sheet。
两个数相除,又叫做两个数的______.a:b(b≠0)其中“:”叫做______,这个比的前项是______,后项是______.
After the big earthquake, many rescue teams ________through the ruins to save survivors. [ ]
A. put
B. broke
C. looked
D. combed