用于矫治不良唇习惯的矫治器有（） A.前庭盾 B.带舌刺的活_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题多项选择题

用于矫治不良唇习惯的矫治器有（）

A.前庭盾

B.带舌刺的活动矫治器

C.焊唇挡丝的活动矫治器

D.唇挡

E.FR-Ⅲ

答案

参考答案：A, C, D

选择题

It's the second time that I _____ in Shanghai! What great changes have taken place in Shanghai! It is ten years since I _____ it last time.

A. have been; left
B. had been; left
C. have been; had left
D. went; had left

单项选择题

根据个人所得税法的规定，工资、薪金所得采用的税率形式是_________。

A．超额累进税率

B．全额累进税率

C．超率累进税率

D．超倍累进税率