如果a除以b等于7除以8，那么b就是a的______（分数）．
设a=7，则b=8，
b÷a=87．
故答案为：87．
— ______ do you _____ the medicine?
— Three times a day.[ ]
A. How often; eat
B. How many times; take
C. How often; take
D. How long; have
节流压井管汇可以作为日常灌钻井液的管线使用。（）
