烟花爆竹产品的生产日期应按年、月、日的顺序标注日期,如:XXXX年XX月XX日。年代号应标注4位阿位伯数字。
参考答案:对
油剂可用的消毒方法是()
A.干烤消毒法
B.压力蒸汽灭菌法
C.紫外线消毒法
D.煮沸法
E.过滤除菌法
The child ________when his father told him a funny story. [ ]
A. was burst into laughing
B. burst into laughter
C. burst in laughing
D. burst out tears