[单选题]下列哪一项违背支托凹的制备原则-我要搜题网

[判断题]P-ATTI是GPS卫星信号欠佳，且不满足定位条件，仅提供姿态增稳的一种飞行模式。
A.正确
B.错误

[简答题]根据《国家电网有限公司供电服务标准》文件，坐收时，收费人员应核对户号、户名、地址等信息，与客户交接钱物时，应( )，轻拿轻放，不抛不丢。

[多选题]实名制充电卡客户可通过()方式申请开具发票。
A.“e充电”网站
B.充电站
C.银行网点
D.供电营业网点

[单项选择]You can drive your own car_______ you have passed the driving test.
A. even if
B. as if
C. now that
D. so that

[不定项选择题]共用题干 Water一the Issue of This Century
The world is running short of freshwater. Populations are growing bigger and thirstier （渴的）,with the result that freshwater is becoming increasingly scarce（缺乏）.Half the world's wetlands have disappeared during the last century,while estimates suggest that wa- ter use will rise by 50% in the next 30 years.
The World Bank report estimates that as much as half of the world's population,concentrated in Africa,the Middle East and south Asia,will face“severe water shortages”by 2025.Local water conflicts and the loss of freshwater ecosystems appear large in some re- gions.
A similar picture emerges from the globe's salt water regions. Three-quarters of the world's people may live within 100km of the sea in 2025,putting even more pressure on stretched coastal ecosystems. Two thirds of fisheries（渔业）are exploited at or beyond their sustainable limits, and half the world's coral reefs（珊瑚礁）may perish in 100 years. Almost 60% of coral reefs and 34% of fish species are at risk from human activities,the Bank says.
The report concludes that there is ample evidence to justify immediate and coordinated action to safeguard supplies and use water more efficiently.
Fresh water consumption is rising quickly,and the availability of water in some regions is likely to become one of the most pressing issues of the 21st century.
A third of the world's popu1ation一around two billion people一live in countries that are experiencing moderate to high water shortages.That proportion could rise to half or more in the next 30 years unless institutions（制度）change to ensure better conservation and alloca- tion of water.
China is one country where the portents（征兆）are gloomy. The most waterstressed country in East Asia,China is exploiting 44%of its usable water,a figure projected to rise to6O%by 2020.Primary withdrawal of water of more than 60%is widely considered by water experts to exceed the environmental carrying capacity of a river basin system. Although
China's total use appears still to be reasonable,it has several basins that are severely stressed environmentally.
Withdrawals exceed environmental limits in Afghanistan and Pakistan,and will exceed them in India by 2020.In the Middle East and North Africa,only Morocco has unexploited water resources.The rest have exceeded environmental limits and many are mining aquifers （蓄水层）一bodies of water-bearing rock一the report says. India exceeds environmental limits for water use.
A.Right
B.Wrong
C.Not mentioned

[单选题]下列哪一项违背支托凹的制备原则A.支托凹的深度一般不应到达牙本质层B.支托凹底与基牙长轴平行C.支托凹底与邻面相交的线角应磨圆钝D.支托凹的形状应近似匙形E.支托凹的颊舌向宽度应约等于基牙颊舌径的1/3～1/2

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[单选题]下列哪一项违背支托凹的制备原则
A.支托凹的深度一般不应到达牙本质层
B.支托凹底与基牙长轴平行
C.支托凹底与邻面相交的线角应磨圆钝
D.支托凹的形状应近似匙形
E.支托凹的颊舌向宽度应约等于基牙颊舌径的1/3～1/2