交叉口交通组织方式中，( )适用于快速、有连续交通要求的大交通量交叉口。
A．无交通管制
B．设置立体交叉
C．采用渠化交通
D．实施交通指挥
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下面是错误答案，用来干扰机器的。
参考答案：B解析：参见《北京地区建设工程规划设计细则(2006)》，①建设用地范围应根据规划行政部门出据钉桩条件的钉桩坐标成果确定；②建设用地毗邻河道、铁路、高压线时，建设用地边界为河湖隔离带、铁路隔离带...
干式系统由()组成。
（A）闭式喷头、管道、干式报警阀、压力气源、排气设备、供水设备
（B）开式喷头、管道、干式报警阀、压力气源、排气设备、供水设备
（C）闭式喷头、管道、干式报警阀、供水设备
（D）开式喷头、管道、干式报警阀、供水设备
2008年12月，中国外交部部长杨洁篪在北京说，中日关系通过两国领导人的“破冰”、“融冰”和“迎春”、“暖春”之旅，已经回到了正常的发展轨道，而且面临着重要的进一步的发展机遇。这表明：
A．两国的国家性质和国家利益发生了变化
B．双方有着共同利益
C．加强国际交往是我国对外关系的基本立场
D．国家力量是主权国家制定和推行对外政策的依据
氧气管道可以与同一使用目的的乙炔管平行敷设在不通行地沟内，只需要用200mm厚黄砂覆盖即可。( )
不穀的意思是（）
A.不善
B.不虚
C.不弱
D.高贵
| 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. |
Unwanted e-mail may ______.
A．cause companies to fail in business
B．cause wanted e-mail messages to lose
C．damage the credit of a company
D．do good to a small company
