用高温炉灼烧完毕后应()。
A.立即打开炉门,让其快速降温
B.先拉下电闸,切断电源
C.炉门先开一条小缝,让其降温快速
D.立即清洁炉膛
参考答案:B, C
“阳脉之海”是指
A.督脉B.冲脉C.任脉D.带脉E.阳跷脉
Last Sunday, Tom and Alice hurt _________in an accident.[ ]
A. himself
B. themselves
C. herself
D. ourselves