酸类货物不得与（）混装
A．莹石
B．氟石
C．橡胶制品
D．以上均不可
参考答案：D
When you decide to start a family, you make a/an ____ to them. You don't turn your back on
the people who love you. [ ]
A. contribution
B. commitment
C. devotion
D. effort
供试品开口置恒湿密闭容器中，在相对湿度75%±5%及90%±5%条件下放置10天( )
A．高温试验B．高湿度试验C．强光照射试验D．加速试验E．长期试验
