污泥比阻是衡量污泥脱水难易程度的指标，以下( )比阻质量大。
A．消化污泥
B．初沉污泥
C．腐殖污泥
D．活性污泥
参考答案：D
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 HTTE The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based (70) .
A. programs B. applications C. frameworks D. constrains
作为全球物流发展的主流将是（）
A.集装箱运输
B.散货班轮运输
C.航空运输
D.原材料运输
