耐高温的玻璃器材、油膏类和干粉类可选用的灭菌法是（）
A.压力蒸汽灭菌
B.干热灭菌
C.甲醛熏蒸
D.环氧乙烷
E.过氧乙酸熏蒸
参考答案：B
_______, I lost heart in English learning, but my teacher often said to me, "Keep on working hard and
you'll succeed ".[ ]
A. At a time, in time
B. At a time, on time
C. At one time, in time
D. At one time, on time
雇主责任险与意外险的区别（）
A.需求的产生基础不同
B.保险标的不同
C.投保目的不同
D.保障项目不同
