固位支持基牙的内聚合度超过6度,固位力不会明显下降。
参考答案:错
为慢性菌痢病人作保留灌肠,正确的是()。
A.在晚间睡眠前灌入
B.灌肠时取右侧卧位
C.肛管插入7~10cm
D.液面距肛门40cm
E.灌肠宜保留20~30分钟
Under perfect competition, the short-run market supply curve is most accurately described by which of the following statements The market short-run supply curve is the:()
A. average of the quantities at each price along the marginal cost curve for all firms in a given industry.
B. sum of the quantities at each price along the average total cost curve for all firms in a given industry.
C. sum of the quantities at each price along the marginal cost curves for all firms in a given industry.