留学知识库
One way of gradually getting learners to understand most of a text the first timee__they heat it,is
在平面a内有角BAC=90度,PA是平面a的斜线,且角PAB=角PAC=60度,
直线AB与直二面角的两个面所成的角都是30度,则此直线和棱所成的角为多少? 为什么? 要过程。
在职研究生的学习方式都有哪些?哪个学校提供有学历(而不是仅仅有学位)的在职研究生?
A true friend is the one that is coming in the door while __else is going out.
I DIDN'T SEE ANYONE IN THE GARDEN THAT NIGHT,__ANY NOISE THERE.
一只铁桶重50N,装满水后350N,用它从井中提水,当水桶未露水面时,人所用拉力是?