基金管理人应在基金份额发售的()日前,将基金合同、托管协议登载在托管人网站上。
A.2
B.3
C.4
D.6
参考答案:B
He likes the birthday presents ______ his friends gave him.
A. that
B.it
C.what
D.where
计算题:经显微镜测量一铜管,其中一齿形参数测得如下:底壁厚为0.235mm,总壁厚为0.305mm,求齿高是多少?