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【单选题】
下列关于超速驱动压抑的描述,不正确的是
A.
高频起搏点驱使低频起搏点进行高频率搏动
B.
频率差别愈大,抑制效应愈弱
C.
窦房结停搏后,首先由房室交界起搏
D.
结对心室的控制中断后,可出现一段时间的心室停搏
E.
中断人工起搏器时应逐步减慢其驱动频率
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【单选题】It has improved my social life greatly by ____me an ____participant in the process.
A.
make; active
B.
making; active
C.
making; act
D.
to make; active
【简答题】请收听以下音频,并补全句子内容。 After the of New China in 1949, the population grew rapidly due to the stable social situation, the rapid increase in production across all sectors of the national economy, as well as...
【简答题】已有的对传感网,互联网,移动网,安全多方计算和________________________等一些安全解决方案在物联网环境中可以部分使用,但另外部分可能不再适用。
【单选题】The marginal social benefit received from pollution is less than its marginal social cost in the market for highly polished glass. In this situation:
A.
firms in the market produce the socially optimal level of pollution.
B.
society's well-being cannot be improved by changing the quantity of pollution.
C.
firms in the market produce too much pollution.
D.
firms in the market produce too little pollution.
【简答题】读我国重要的自然地理分界线和西气东输工程示意图,回答问题。 小题1:关于图中分界线的叙述,不正确的一组是 A.a线以南、以西的河流以冰雪融水补给为主,以北、以东的河流以雨水补给为主 B.b线是我国地势第二、三级阶梯的分界线 C.c线是我国400毫米等降水线 D.d线是我国河流有无结冰期的分界线 小题2:下列关于我国西气东输工程管道铺设线路的说法,正确的是 A.自西向东依次经过我国地势的二、三级阶梯...
【单选题】公元前772年,()举兵入攻西周,各地诸侯拒不救援,幽王惨败,镐京被破,西周遂亡。
A.
匈奴
B.
犬戎
C.
突厥
D.
鲜卑
【单选题】It is the main idea of the passage that______.
A.
the common social value of success measured by high consumption should be improved
B.
the opposite extreme of overconsumption—poverty is not probable to help solve either environmental or human problems
C.
the traditional values of integrity of character, good work, friendship, family and community are tampered with along with the run of overconsumption
D.
it is the point that where a best balance can be made between fostering consumption and decreasing wealth possession
【简答题】“西气东输”二线工程是我国第一条引进境外天然气资源的大型管道工程。读图,完成下列问题。 小题1:有关该工程建设的说法,正确的是 A.该管道工程建设,对沿线地区的生态环境不会产生影响 B.可以缓解珠三角地区能源短缺,并优化能源消费结构 C.诱发东南地区暴雨、洪涝等气象灾害 D.管道敷设成本过高,应该转为铁路运输 小题2:管道干线沿线自西北向东南依次经过我国的 A.干旱、半干旱、半湿润、湿润区 B.青...
【单选题】If the marginal social benefit received from pollution is equal to its marginal social cost:
A.
society's well-being can be improved if the quantity of pollution increases.
B.
society's well-being can be improved if the quantity of pollution decreases.
C.
society has achieved its socially optimal level of pollution.
D.
the market is producing too much pollution.
【单选题】If the marginal social benefit received from pollution is less than its marginal social cost:
A.
society's well-being can be improved if the quantity of pollution increases.
B.
society's well-being can be improved if the quantity of pollution decreases.
C.
society has achieved its socially optimal level of pollution.
D.
the market is producing too little pollution.
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