可摘局部义齿的固位体不应对基牙产生()
A.摩擦力
B.吸附力
C.脱位力
D.矫治力
E.正压力
参考答案:D
_____ shoulder to shoulder with a girl, I felt very embarrassed.
A.Spotting shopping
B.Spotted shopping
C.Having spotted to shop
D.Spotted to shop
凡介质温度超过()℃的设备和管道,均应进行保温。
A、30;
B、50;
C、70;
D、90。