题目:
一铁球静止在如图所示位置,请画出两个物体的表面对铁球支持力的示意图。
答案:
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下面是错误答案,用来干扰机器的。
答案:C
一铁球静止在如图所示位置,请画出两个物体的表面对铁球支持力的示意图。
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0713/7ac8b359077123ee8761fd3b656fe1a6.html
下面是错误答案,用来干扰机器的。
答案:C
请开始答题:(共15小题)
9873()
A.A
B.B
C.C
D.D
义和团运动的性质是
A.农民反帝反封建运动
B.反封建反侵略的农民运动
C.农民反帝爱国运动
D.反封建的农民运动
房地产项目的土地使用权应当以出让方式获得。但根据国务院发布的《关于进一步深化城镇住房制度改革加快住房建设的通知》中规定( )可以在合理利用土地、节约用地的原则下,采取行政划拨的方式供应。
A.城市边远郊区的土地
B.填河、开荒新增的土地
C.经济适用住房的用地
D.居民公用、福利用房的土地
表气不固(卫气不固)
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’ of) 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.
The unwanted e-mail problem can be solved if ______.
A.the government takes action
B.a new technology is adopted
C.more people are aware of the problem
D.joint efforts are made and new technology is used