0.05里面有______个百分之一,0.8里面有______个千分之一.

题型:填空题

问题:

0.05里面有______个百分之一,0.8里面有______个千分之一.

考点:小数的产生及意义小数的读法和写法
题型:填空题

下列做法属于不平等待人的是 ( ) 

①对贫困者、体力劳动者嗤之以鼻 ②对城里人恭敬,对乡下人鄙视 

③以貌取人,以地位取人         ④北方人嘲笑南方人说不好普通话

A.①②③④

B.①③④

C.①②④

D.②③④

题型:填空题

企业所得税税基分析常用指标()

A.应税收入

B.计税所得额

C.进项税额

D.销项税额

题型:填空题

退休的张老师在田径场跑道上慢走锻炼,他每分钟走75米,打算走3圈,已知每圈跑道长400米.他走完要多久?

题型:填空题

离心泵的扬程与升扬高度间的关系是()。

A.扬程大于升扬高度

B.扬程等于升扬高度

C.扬程小于升扬高度

D.根据流速决定大小

题型:填空题

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.

"Opt-out" mechanism is probably().

A. a machine that can be attached to your computer

B. a button that you can make a choice to read or not to read

C. a software that you can play a computer game

D. an e-mail that says some good words to you

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