选一个并说明一下原因,The combination of temperature and pressure______

选一个并说明一下原因,
The combination of temperature and pressure______the densities become equal is called the critical point.
A.in which B.that C.at which D.on that

leungke 1年前已收到3个回答举报

yiyawen 幼苗

共回答了22个问题采纳率：90.9% 举报

C
温度和压力组合在该密度成为平等的这一点被称为临界点.
at which作为定语从句的引导词,等于where.
The combination of temperature and pressure is called the critical point.
The densities becomes at the critical point.

1年前

双双168 幼苗

共回答了2个问题举报

C ， temperature前面用AT

1年前

xvbn 幼苗

共回答了203个问题举报

C
不知道这是哪个门类的，热力学吗？就是说一种物质在温度A的密度和在压力B的密度是一样的，然后A和B的组合就是他的critical point。
所谓at which是the density at temperature and the density at pressure B

1年前

可能相似的问题

你能帮帮他们吗

精彩回答