已知某12SH型离心泵的额定参数为Q=730m3/h,H=10m,n=1450r/min。试计算其比转数为()
参考答案:300
强调法治发展的科学性,就是要尊重法治发展与社会发展的内在规律,并用于指导法治实施。
连词成句。
1. you help let me .
2. it time is what ?
3. to nice you see too .
4. would you like breakfast what for ?
5. green mine the toothbrush is .