塑料全冠一般为 A．刃状边缘 B．凿状边缘 C．凹形边缘 D．肩_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

塑料全冠一般为

A．刃状边缘
B．凿状边缘
C．凹形边缘
D．肩台形边缘
E．带斜面凹形边缘

答案

参考答案：D

选择题

点到直线的距离是指 [ ]

A、直线外一点到这条直线的垂线段

B、直线外一点到这条直线的垂线段的长度

C、直线外一点与这条直线上任一点所连接的线段

D、直线外一点与这条直线上任一点所连接的线段的长度

单项选择题

Questions 14-23

·Look at the ten statements for this part.
·You will hear a passage about "A Research on Sleep ". You will listen to it twice.
·Decide whetheryou think each statement is right(R), wrong(W) or not mentioned(NM).
·Mark your answers on the Answer Sheet.

An increase in the activity cycle shows a decrease in the body’s delta rhythm.

A. Right

B. Wrong

C. Not Mentioned