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【多选题】
关于时区和日界线的说法，正确的是 [ ]A.
又叫格林尼治时间
B.
每个时区以中央经线的地方时作为整个时区的统一时间，叫做
C.
国际上规定将全球划分为24个时区，东、西12一个时区
D.
地球上的日界线只有一条，即180°经线
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皮皮学刷刷变学霸
举一反三
【单选题】The earth is much cooler than the sun, and the wave length of the earth's radiations is much longer than that of sunrays. These longer heat waves cannot pass through the atmosphere as easily as the sh...
A.
heat waves rising from the earth
B.
waves absorbed by water vapor
C.
waves sent out by radio stations that transmit local programs
D.
the rays sent out from the sun
【简答题】accomplish
【多选题】Servlet 用于保持会话的技术有:( )。
A.
Cookie
B.
TCP/IP 三次握手
C.
HTTP session
D.
安全的HTTP协议HTTPS
E.
HTML 隐藏表单域
【简答题】accomplish
【单选题】How could 'levels of electromagnetic radiation that exceed international safety standards' be produced?
A.
Mobile phones give off a lot of electromagnetic radiation.
B.
Train carriages, buses, and lifts are not safe places to use mobile phones.
C.
A lot of people could use their mobile phones in a confined space at the same time.
D.
Blathering produces radio waves which bounce around the interior of these places.
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