慢走丝的走丝速度一般低于（）。_爱下问搜题

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问题填空题

慢走丝的走丝速度一般低于（）。

答案

参考答案：0.2m/s

补全对话，情景问答

Look, read and choose. (根据图意，选择合适的对话)

( )1.	A. -This is my father. -Nice to meet you?
( )2.	B. -Who's that boy? -He's my brother.
( )3.	C. -Is she your sister? -No, my mom

单项选择题

X线片上判断牙槽骨高度降低的标准是牙槽嵴顶（）

A.与釉牙骨质界平齐

B.到釉牙骨质界的距离小于1mm

C.到釉牙骨质界的距离小于2mm

D.到釉牙骨质界的距离大于2mm

E.到釉牙骨质界的距离大于3mm