DFE体系结构的组成部分有()。 A.产品结构设计 B.材料选择 C.产品环境性能设

题型:多项选择题

问题:

DFE体系结构的组成部分有()。

A.产品结构设计

B.材料选择

C.产品环境性能设计

D.产品资源性能设计

E.产品质量设计

考点:生产运营管理生产运营管理题库
题型:多项选择题

功率控制的原因包括()、()、()三个方面。

题型:多项选择题

人文生态学所研究的对象主要是( )。

A.人和机构组织的地理分布的形成过程及其变化规律

B.建筑高度和建筑材料、城市色彩,城市道路网的形态

C.不同社会集团在各种人类活动中的竞争结果

D.各种制约条件,动态研究人类活动

题型:多项选择题

针刺易引起流产的穴位是()。

A.内关

B.涌泉

C.合谷

D.太冲

E.关元

题型:多项选择题

读图,回答问题。

图一康有为
图二张謇

(1)图中两位历史人物分别提出了怎样的救国主张?______________________________________________________(2)上述两位历史人物救国主张的结果是怎样的?出现这种结果的主要原因是什么?______________________________________________________

题型:多项选择题

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 mail 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 mail 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 mail.
Many senders of unsolicited commercial electronic mail 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’ o0 receipt of commercial electronic mail 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 mail cannot be solved by the government alone. The development and adoption of technological approaches and the pursuit of cooperative efforts with other countries will be necessary as well.

According to the passage, efficiency of e-mail is threatened by ______.

A.heavy e-mail traffic

B.fraudulent e-mail messages

C.large volume of messages

D.increasing amount of unwanted e-mail

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