我国成人膳食铬的适宜摄入量(AI)为()。
A.50mg/d
B.100mg/d
C.150mg/d
D.50μg/d
E.100μg/d
参考答案:D
—Maybe tomorrow morning.
A. when
B. where
C. how
华支睾吸虫主要寄生在()