小管液中的Na+浓度通过什么影响肾素分泌()。
A.肾小球
B.近球小管
C.髓袢
D.远端小管和集合管
E.致密斑
参考答案:E
Many girls in our class are of insects, but I'm in them.
A. terrified; interesting
B. interested; terrified
C. terrified; interested
D. interested; terrifying
清代对外贸易实施公行制度,其行商具有商务和外交双重职责。