甲醛蒸汽熏蒸()
A.物理灭菌
B.化学灭菌
C.防腐
D.消毒
E.上述均不正确
参考答案:B
旋转式60钴治疗机头旋转范围是()
A.0~360°
B.0~180°
C.0~90°
D.0~110°
E.0~260°
---Sorry, I am late.
---That’s okay.You are here and that’s what
A.does
B.works
C.stays
D.counts