玻璃钢夹砂管道可以采用（）缠绕工艺、离心浇铸工艺、连续缠绕工艺方法制成。
某人在淘宝网上开设一家玩具店铺，则该店铺网站在技术方法上属于（）
A. 使用现成的解决方案组建的网站
B. 租用空间形式的网站
C. 自建网站
D. 平台网站
针对以物理途径访问系统的人，如何保护磁盘文件不会被窃取？（考虑数据加密）
A twin-screw vessel with a single rudder is making headway. The engines are full speed ahead. There is no wind or current. Which statement is FALSE? （）
A. If one screw is stopped，the ship will turn toward the side of the stopped screw
B. The principal force which turns the ship is set up by the wake against the forward side of the rudder
C. Turning response by use of the rudder only is greater than on a single-screw vessel
D. With the rudder amidships，the ship will steer a fairly steady course
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