妊娠合并心脏病的孕产妇在妊娠期易发心衰的时间是
A.20周~24周B.26周~28周C.32周~34周D.35周~36周E.37周~39周
参考答案:C
下列物质分类正确的是
A.芳香族化合物
B.羧酸
C.醛
D.酚
Originally introduced by Netscape Communications, (66) are a general mechanism which HTTP Server side applications, such as CGI (67) , can use to both store and retrieve information on the HTTP (68) side of the connection. Basically, Cookies can be used to compensate for the (69) nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based (70) .
(67)处填()。
A.graphics
B.processes
C.scripts
D.texts