搜题请搜索小程序“爱下问搜题”
问题 单项选择题 A1型题

上颌第一磨牙近中颊根双管型或单双管型的出现机率为（）

A.87%

B.40%

C.63%

D.9%

E.30%

答案

参考答案：C

问答题 简答题

简述蒸汽机的工作原理？
查看答案
单项选择题

What changes are NOT happening now that the shelf has broken up
a. It is causing changes in currents and species in the area.
b. The most southern part of the Larsen ice shelf has broken up too.
c. There will be an effect on sea level that will be felt around the world.
d. The glaciers are pushing ice in the form of icebergs into the sea.
查看答案