监理员有参加总监理工程师组织的定期或不定期对承包单位的安全、消防、环境、文明施工检查工作，并做好检查记录的职责。
参考答案：对
Though he doesn’t achieve his goals, he is not a failure．___, he is remembered as a true hero．
A．In particular
B．On the contrary
C．Generally speaking
D．To be honest
丙烯酰胺的半数致死量为（）。
A.150-180ug/kg
B.250-280ug/kg
C.280-300ug/kg
D.300-320ug/kg
