时区（Time Zone）是地球上的区域使用同一个时间定义。1884年在华盛顿召开国际经度会议时，为了克服时间上的混乱，规定将全球划分为（）个时区

A.12

B.24

C.36

D.48

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更多“时区（Time Zone）是地球上的区域使用同一个时间定义。…”相关的问题

第1题

Everyone uses the expressions AM and PM. But do you exactly know what they mean and how th

ey came into being？

As you know, the turning of the earth makes the sun and the stars seem to move across the sky. Daylight, of course,【21】, when the sun rises in the east and when the sun is high【22】the sky, between these two positions, half of the daylight hours have been spent.

Therefore, by noticing【23】the sun stood in the sky, early man know they could tell the time of the day, At night the motion of the stars【24】the same purpose. The important thing in keeping time is to know the exact moment of【25】. For each of us, wherever we are, noon is when the sun is directly overhead. Think of an imaginary line【26】the sky, stretching from the north point of your horizon just to the south point.

When the sun cross your meridian (子午线), it is noon for you. When the sun still【27】of this line, or the meridian, it is morning. After the sun has crossed this line, it is【28】.

The Latin word for "midday" is "deridian",【29】which comes our word meridian. So AM is an abbreviation (缩写词) for "ante meridean", or before midday, and PM for after midday. Each or the world's time zones (时区) is about fifteen degrees wide in longitude (经度), which is about the distance the sun moves through tile sky in all hour.【30】lives in the same time zone observes noon at the same moment. In this way, the time is different by one hour as you move through each time zone.

(61)

A．comes

B．begins

C．appears

D．shines

点击查看答案

第2题

Everyone uses the expressions AM and PM. But do you exactly know what they mean and how th

ey came into being？

As you know, the turning of the earth makes the sun and the stars seem to move across the sky. Daylight,of course,【21】. when the sun rises in the east and ends in the west,when the sun is high【22】the sky, between these two positions, half of the daylight hours have been spent.

Therefore, by noticing【23】the sun stood in the sky, early man know they could tell the time of the day. At night the motion of the stars【24】the same purpose. The important thing in keeping time is to know the exact moment of【25】. For each of us,wherever we are, noon is when the sun is directly over head. Think of an imaginary line【26】the sky, stretching from the north point of your horizon just to the south point.

When the sun cross your meridian (子午线), it is noon for you. When the sun still【27】of this line, or the meridian, it is morning. After the sun has crossed this line, it is【28】.

The Latin word for" midday" is" deridian" ,【29】which comes our word meridian. So AM is an abbreviation(缩写词) for "ante meridian " ,of before midday, and PM for after midday. Each of the world's time zones(时区)is about fifteer degrees wide in longitude(经度) ,which is about the distance the sun moves through the sky in an hour.【30】lives in the same zone observes noon at the same moment. In this way, the time is different by one hour. as you move through each time zone.

(46)

A．comes

B．begins

C．appears

D．shines

点击查看答案

第3题

你是Win2k网络网管，在单域中有三台Win2k域控制器。主DNS服务器安装在域控制器dc1.contoso.com上，从DNS服务安装在成员服务器srv1.contoso.com和srv2.contoso.com上。你希望提高DNS的容错性能并优化复制和区域传递的管理。你要做的工作是？()

A.升级从DNS所在成员控制器为域控制器

B.将成员控制器加入主DNS服务器通知名单中

C.将DNS从成员控制器删除，在域控制器上安装DNS，将当前的zone转换为AD集成zone

D.设置在SOA记录中的TTL为最小值