可摘义齿固位体应该具备的条件是必须提供足够的A．支持力B．稳定

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问题单项选择题

可摘义齿固位体应该具备的条件是必须提供足够的

A．支持力
B．稳定力
C．固位力
D．吸附力
E．大气压力

答案

参考答案：C

解析：可摘义齿固位体应该具备的条件是必须提供足够的固位力。

选择题

He stood up, _____ the large door and looked outside. There on the ground lay a white dog. [ ]

A. opens

B. opened

C. opening

D. having opened

选择题

He cannot hide his feelings, except ____ the writers ask if everything is all right.

A．how

B．that

C．why

D．when