燃油锅炉停炉吹扫时，（）将残油吹入无火焰的热炉膛。
A、禁止
B、可以
C、必须
D、任意
参考答案：A
________you are grown up, you should not rely on your parents.[ ]
A. Now that
B. Before
C. Although
D. As well as
下述何种药物可引起中毒性心肌炎（）
A.利多卡因
B.青霉素
C.消炎痛
D.环孢素
E.阿霉素
