如何利用仿生学法进行母畜的发情鉴定？

There were many more people who got injured in the big fire than _______.

A．was reported

B．it was reported

C．were reported

D．they were reported

开采突出煤层时，必须采取（）等综合防治突出措施。

A、突出危险性预测

B、防治突出措施

C、防治突出措施的效果检验

D、安全防护措施

教育学

车用柴油于2011年7月1日起执行国Ⅲ标准，规定其硫含量不得高于（）ppm。

A.50

B.150

C.350

D.500

购人员日常工作的重点？