封闭式基金（）披露一次基金份额净值，但每个交易日都进行估值。
A．每天
B．每周
C．每月
D．每5天
参考答案：B
不属于影响污染物对健康损害的因素是（）
A、联合作用
B、气象条件
C、剂量或强度
D、个体感受性
E、作用持续时间
A Swiss firm can borrow in Switzerland at 10 percent and in the U. S. at 8.5 percent. A U. S. firm can borrow in Switzerland at 10.5 percent and in the U. S. at 8.5 percent. Which firm has a comparative advantage in which currency The:()
A. Swiss firm has a comparative advantage borrowing in the U. S.
B. Swiss firm has a comparative advantage borrowing in Switzerland.
C. U.S. firm has a comparative advantage in borrowing in the U. S.
