3乘120的积是______,280是7的______倍.
3×120=360;
280÷7=40.
答:3乘120的积是360,280是7的40倍.
故答案为:360,40.
骨与关节结核的手术适应证为()
A.年龄过大或过小
B.有其他脏器活动性结核病变
C.抗结核治疗在2周之内
D.全身中毒症状严重,抗结核药物效果不佳
E.窦道流脓经久不愈
---What’s this in English? ---It is a ____________
A ruler B pencil C pen D key