以下哪项脑脊液改变最有助于MS的诊断（） A.蛋白质定量增高 B.细胞数增加 C.糖

高渗状态有哪两类（）

A.高钠血症和高钾血症

B.高钠血症和高钙血症

C.高钠血症和高糖血症

D.高钾血症和高糖血症

E.高钙血症和高糖血症

下列各项中不属于急性血吸虫病临床表现的是（）

A.发热

B.腹水

C.肝脾肿大

D.过敏

E.腹痛、腹泻

电子镇流器具有可调光性。

1．任务描述

某高层住宅的单元平面如下图所示。图中采用分体空调，配电箱及空调电源插座位置已给定，按《住宅设计规范》的最低要求绘制插座平面布置图。

2．任务要求

用提供的电气图例按以下要求绘制插座平面布置图(储藏、阳台不需布置)：

(1)绘出所有电源插座位置(空调插座已给定)；

(2)绘出所有电源插座回路井编号(回路均引自配电箱)。

3．布置要求

电源插座的设置数量不应少于以下规定：

(1)卧室、厨房：一个单相三线和一个单相二线的组台插座两组。

(2)起居室(厅)：一个单相三线和一个单相二线的组合插座三组。

(3)卫生间：防溅水型一个单相三线和一个单相二线的组合插座一组。

(4)布置洗衣机、冰箱、排气机械和空调器等处：专用单相三线插座各一个。

4．图例

5．选择题

(1)户中厨房至少应设置组合插座和专用单相三线插座共______个。

A．2 B．3 C．4 D．5

(2)户中卫生间至少应设置组合插座和专用单相三线插座共______个。

A．1 B．2 C．3 D．4

(3)下列关于空调电源插座回路设计的表述中正确的是______。

A．空调电源插座应单独设置回路

B．空调电源插座与其他电源插座可共用一个回路

C．空调电源插座与洗衣机、冰箱等电源插座可共用一个回路

D．卧室内空调电源插座与其他电源插座可共用一个回路，起居室内空调电源插座与其他电源插座可共用一个回路

(4)下列关于厨房、卫生间电源插座回路设计的表述中正确的是______。

A．没有明确要求

B．厨房、卫生间电源插座宜共用一个回路

C．厨房、卫生间电源插座宜设置独立回路

D．厨房、卫生间电源插座可与起居室、卧室除空调电源插座以外的其他电源插座共用一个回路

(5)户中除空调电源插座回路外，起居室和卧室接入配电箱的电源插座回路数量至少为______个。

A．1 B．2 C．3 D．4

Electronic mail has become an extremely important and popular means of communication.

The convenience and efficiency of electronic mail are threatened by the extremely rapid growth in the volume of unsolicited commercial electronic mail. Unsolicited commercial electronic mail is currently estimated to account for over half of all electronic mall traffic, up from an estimated 7 percent in 2001, and the volume continues to rise. Most of these messages are fraudulent or deceptive in one or more respects.

The receipt of unsolicited commercial electronic mail may result in costs to recipients who cannot refuse to accept such mail and who incur costs for the storage of such mail, or for the time spent accessing, reviewing, and discarding such mail, or for both. The receipt of a large number of unwanted messages also decreases the convenience of electronic mall and creates a risk that wanted electronic mail messages, both commercial and noncommercial, will be lost, overlooked, or discarded amidst the larger volume of unwanted messages, thus reducing the reliability and usefulness of electronic mail to the recipient. Some commercial electronic mail contains material that many recipients may consider vulgar or pornographic in nature.

The growth in unsolicited commercial electronic mail imposes significant monetary costs on providers of Internet access services, businesses, and educational and nonprofit institutions that carry and receive such mail, as there is a finite volume of mail that such providers, businesses, and institutions can handle without further investment in infrastructure. Many senders of unsolicited commercial electronic mail purposefully disguise the source of such mall.

Many senders of unsolicited commercial electronic mall purposefully include misleading information in the messages’ subject lines in order to induce the recipients to view the messages. While some senders of commercial electronic mail messages provide simple and reliable ways for recipients to reject (or ’opt-out’ of) receipt of commercial electronic mall from such senders in the future, other senders provide no such ’opt-out’ mechanism, or refuse to honor the requests of recipients not to receive electronic mail from such senders in the future, or both.

Many senders of bulk unsolicited commercial electronic mail use computer programs to gather large numbers of electronic mail addresses on an automated basis from Internet websites or online services where users must post their addresses in order to make full use of the website or service.

The problems associated with the rapid growth and abuse of unsolicited commercial electronic mall cannot be solved by the government alone. The development and adoption of techno-logical approaches and the pursuit of cooperative efforts with other countries will be necessary as well.

"Disguise" in Paragraph 4 is closest in meaning to ().

A. reveal

B. hide

C. deliver

D. post