医德意识的集中体现是
A.医德理论
B.医德原则和规范
C.医德思想
D.医德观念
E.A和B
参考答案：B
----- _______ in the workshop. Please stop it.
----- Sorry. I________.
A．Smoking is not allowed, don’t know
B．Not smoking, an not sure
C．Don’t smoke, have no idea
D．Smoking is forbidden, didn’t know
二氧化钛供给系统停电恢复后，要确认浆料系统已运转才能启动泵。（）
