胃食管反流病以胸痛为主者,应与( )和( )胸痛的各种病因鉴别,怀疑心绞痛者应做( )。
参考答案:心源性 非心源性 心电图
Tom, I know you are independent and needn’t any money but I think that you might just as well bring some just______.
A.in case
B.in the end
C.in order
D.once again
镗刀按用途分类可分为()。
A.内孔镗刀
B.外圆镗刀
C.端面镗刀
D.切槽刀
E.切断刀
F.内螺纹切刀