Is that his pen _____ the lost and found case?[ ]
A. at
B. on
C. in
D. by
答案:C
孕妇及乳母的摄碘量应为()。
A.100μg
B.200μg
C.300μg
D.400μg
E.500μg
在园林管线综合布置中,以下哪种管线应该靠近建筑物布置()。
A、给水管;
B、电力电缆;
C、雨水管道;
D、污水管道。