At the instant when a string of casing being run from a ship is landed in the well head,（）.
A. the total weight in air of the casing string is removed from the ship
B. the hook load (weight of the casing string) is removed from the ship
C. the weight of the casing inside the riser is removed from the ship
D. the weight of the casing string added to the weight of the fill-up mud is removed from the shi
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《招标投标法》规定，招标项目属于建设施工的，投标文件的内容不包括()。
A. 拟派出的项目负责人的简历、业绩
B. 主要技术人员的简历、业绩
C. 拟用于完成招标项目的机械设备
D. 商务和技术偏差表
Which three options are valid ways to filter routes from a BGP peer？（）
A. filter-list
B. inbound ACL
C. route-map
D. outbound ACL
E. prefix-list
F. neighbor 10.0.0.1 deny-map my-map command
已知x（t）和y（t）为两个周期函数，T为其共同周期，其互相关函数为（）。
Windows 2000 Server用户账户有（） a.内建用户账户 b.域用户账户 c.本地用户账户
A. a
B. b
C. c
D. a，b，c
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