L-CKD的标准油名是()。
参考答案:重负荷工业闭式齿轮油
I’ve become good friend with several of the student in my school _______I meet in the English speech contest last year.
A.who
B.where
C.when
D.which
“君子和而不同,小人同而不和。”中的“同”意思是“盲目附和”。