请问rating grade class作为等级的意思时,它们之间有区别吗?

请问rating grade class作为等级的意思时,它们之间有区别吗? 请问：英文中的年级是否大写,如：Are you in ( ),( A.Class three,Grade sevenB.Class three,grade seven C.Class Three,Grade Seven D.Class Three,Grade seven (答案是C,） Class Three,Grade One rating rating grade和class哪个在前面 we are a____in class one,grade class Are you in__one,___tow A.Class grade B.classs grade C.Class Grade 请问螺栓 ASTM A1554具体标准的中文内容是什么还有ASTM A1554 grade 36 Class 2A ASTM F2329 ASTM A563 Grade AASTM F436 Type 1 是Class 2,Grade 首个字母大写,还有Class Two,Grade Three对吗?还是Class two Grade three is,class,grade,she,two,three,in in,Tony,is grade,class,one,two She is in Class forn,grade seven I'm in Class 5 ,Grade 1 My brother is in___________.A.Class Three,Grade OneB.Grade One,Class Three1.My brother is in___________.A.Class Three,Grade OneB.Grade One,Class Three Is Kim in Class One,Grade I am in Class Two,Grade 高一六班用英语怎么说Class Six Grade 什么..