微机调速器具有PID调节规律。()
参考答案:对
Dad, I think you should stop _____. It's bad for your health. [ ]
A. smoke
B. smoked
C. smoking
D. to smoke
某患者,32岁,缺失,为基牙做单端固定桥,此类修复一般不适用于()。
A.缺牙间隙大
B.缺牙间隙小
C.前牙浅覆
D.前牙开
E.有邻面浅龋