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问题 问答题 简答题

国际域名命名规则

答案

参考答案：

1）26个字母、10个阿拉伯数字以及横杠“－”组成。2）不能超过67个字符（包括.com，.net）3）不能包含空格，字母不区分大小写。4）每个层次最长不能超过22个字母。5）国际域名有效期在注册时可以选择一年或更长时间。

单项选择题

阅读下面短文，从短文后各题所给的四个选项（A、B、C 和 D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

                                    A Heroic Driver

Larry works with Transport Drivers. Inc. One morning in 2009. Larry was  41

along 165 north after delivering to one of his    42   . suddenly, he saw a car with its bright lights on.    43    he got closer, he found 44    vehicle upside down on the road. One more look and he noticed    45    shooting out from under the    46    vehicle. Larry pulled over, set the brake and    47   the fire extinguisher (灭火器). Two good bursts from the extinguisher and the fire was put out.

The man who had his bright lights on    48    and told Larry he had    49    an emergency call. They    50    heard a woman’s voice coming from the wrecked (毁坏的) vehicle.    51   the vehicle, they saw that a woman was trying to get out of the broken window. They told her to stay    52    until the emergency personnel arrived,    53    she thought the car was going to    54   . Larry told her that he had already put out the fire and she should not move    55    she injured her neck.

Once fire and emergency people arrive, Larry and the other man    56    and let them go to work. Then, Larry asked the    57    if he was needed or    58    to go. They let him and the other man go.

One thing is    59   —Larry went above and beyond the call of duty by getting so close to the burning vehicle! His    60    most likely saved the woman’s life.

52（）

A.quiet

B.still

C.away

D.calm
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多项选择题

热水供暖系统的分类方式主要有（）

A.重力回水和机械回水系统之分

B.自然循环和机械循环系统之分

C.高温和低温系统之分

D.单管和双管系统之分
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