卷筒出现下述哪种情况时,应报废()。
A.裂纹;筒壁磨损达原壁厚的20%
B.筒壁磨损达原壁厚的20%
C.筒壁磨损达原壁厚的10%
D.筒壁磨损达原壁厚的15%
参考答案:A
When his mother _____ , he felt very sad . Now when he thought of her _____,
he can't help crying.[ ]
A. died, died
B. died, death
C. death, death
D. death, died
中药的毒性是()
A.配伍不当出现的反应
B.药不对证出现的不良反应
C.常规剂量出现的与治疗无关的不适反应
D.中药的偏性
E.服药后出现过敏反应