直经是3.0mm的铜包钢线表示为（）。
A.3.0BS
B.3.0AS
C.3.0ES
D.3.0CS
参考答案：D
Don't hesitate to discuss your plans with ________ you believe can be of great assistance to you.[ ]
A. who
B. whom
C. whomever
D. whoever
注意是一个独立的心理过程。
