义齿支架大小连接体折断较为理想的焊接工艺为
A．嵌体B．半冠C．烤瓷熔附金属全冠D．桩冠E．3/4冠
参考答案：D
—Why do you look worried?
— Because what I am really concerned about is _____my friend can do me a favor or not..
A．although
B．whether
C．when
D．where
某男，56岁。心脏骤停后出现室性心动过速，电击后仍没有好转。治疗首选
A．洋地黄
B．安定
C．阿托品
D．利多卡因
E．胺碘酮
