现代信息加工心理学家把人的记忆系统分为()
A.两个子系统
B.三个子系统
C.四个子系统
D.五个子系统
参考答案:B
患者,男,70岁,无牙颌病人,下颌弓略宽于上颌弓,在进行后牙排列时,以下方法不正确的是()
A.适当加大横曲线曲度
B.选用无尖牙
C.可磨改上后牙颊、舌尖的舌斜面
D.加大后牙覆盖
E.可磨改下后牙颊、舌尖的颊斜面
In the short run, price searchers maximize profits by producing output where marginal revenue (MR):()
A. equals marginal costs (MC) and charging a price based on the average total cost (ATC) curve.
B. is greater than marginal costs (MC) and charging a price based on the demand curve.
C. equals marginal costs (MC) and charging a price based on the demand curve.