在等差数列{an}中,已知a1=2,a2+a3=13,则a4+a5+a6等于[ ]
A.40
B.42
C.43
D.45
答案:B
凡进口或者在中国境内销售列入《中华人民共和国进口计量器具型式审查目录》内的计量器具,应当向()申请办理型式批准。
A.国务院计量行政部门
B.省级政府计量行政部门
C.县级以上政府计量行政部门
D.国务院计量行政部门授权的计量技术机构
Originally introduced by Netscape Communications, (56) are a general mechanism which HTTP Server side applications, such as CGI (57) , can use to both store and retrieve information on the HTTP (58) side of the connection. Basically, Cookies can be used to compensate for the (59) nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based (60) .
(58)是()
A.Client
B.Editor
C.Creator
D.Server