实验动物体温失去恒定开始上升或下降时的环境温度称之为（）
A、最适温度
B、高、低临界温度
C、实验动物饲育室的温度范围
D、温度中性区问
参考答案：B
Compared with his sister, Jerry is even more_____to, and more easily troubled by , emotional and relationship problems.
A．sceptical
B．addicted
C．available
D．sensitive
职业健康监护档案包括健康检查资料和
A．流行病学资料B．劳动卫生调查资料C．实验室检查资料D．生产环境资料E．生物监测资料
Compared with his sister, Jerry is even more_____to, and more easily troubled by , emotional and relationship problems.