当我们采用“255.255.255.0”作为子网掩码,说明此网络中终端的台数至多()

题型:单项选择题

问题:

当我们采用“255.255.255.0”作为子网掩码,说明此网络中终端的台数至多()。

A、255台

B、254台

C、0台

D、128台

考点:高中信息技术网络技术基础网络技术基础题库
题型:单项选择题

The World Trade Organization was founded in 1995. It absorbed the General Agreement on Tariffs and Trade (GATT), which covers trade in manufactured and agricultural goods. The WTO also regulates trade in services and in intellectual property, which includes such creations (作品)as books, computer softwares, and recordings.

The WTO is one of three major organizations that oversee (监督)international economic relations among governments. The other two are the International Monetary Fund (国际货币基金会), which works to improve payment arrangements and other financial dealings between countries, and the World Bank, which provides loans to poorer nations for economic development. WTO headquarters are in Geneva, Switzerland.

1) The World Trade Organization was founded in (46) .

2) The GATT covers trade in (47) goods.

3) The WTO is one of three major organizations. The other two are the (48) and (49) .

4) WTO headquarters are in (50) , Switzerland.

46()

题型:单项选择题

测量胎儿腹围的标准平面是以下哪项?①胎儿脐部水平;②与脊柱垂直;③可显示胎儿脊柱、胃泡、肝脏、脐静脉;④测量最大前后径、最大横径、不包括胎儿的皮肤()

A.①

B.①②

C.①②③

D.①②③④

E.③④

题型:单项选择题

[复合型非选择题]男,63岁。晨起床时,发现言语不清,右侧肢体不能活动。既往无类似病史。发病后5小时,体检发现神志清楚,血压16/10.7kPa(120/80mmHg),失语,右中枢性面瘫、舌瘫,右上、下肢肌力2级,右半身痛觉减退,颅脑CT未见异常。

病变的部位可能是()

A.左侧大脑前动脉

B.右侧大脑前动脉

C.左侧大脑中动脉

D.右侧大脑中动脉

E.椎-基底动脉

题型:单项选择题

在车床上加工薄壁工件,最大的困难是()。

A.工件的进给量

B.工件的夹紧力

C.工件的变形

D.工件的粗糙度

题型:单项选择题

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