铅中毒为

某船顺流航行48km用了4小时，逆流航行32km也用了4小时，求船在静水中的速度、水流的速度各是多少？

支饮的主症是

A．饮水流行，归于四肢，当汗出而不汗出，身体疼重

B．心下坚筑，短气，恶水不欲饮

C．咳逆倚息，短气不得卧，其形如肿

D．喘漏，心下痞坚，面色黧黑

E．素盛今瘦，水走肠间，沥沥有声

—I called you at half past nine this morning but there was no answer.

—Oh, sorry. I ______ with my cousin at the supermarket. [ ]

A. shop

B. was shopping

C. shopped

D. will shop

_________ yourself to some wine can help you sleep.    [ ]

A. Treating                        

B. Relaxing    

C. Drinking                        

D. Taking

HBV血清学检查内容主要有哪些？表示HBV复制及具有传染性的指标有哪些？