更多“不可展表面只能作近似的展开,适于这类的表面有()。”相关的问题
下列哪项因素不能使氧化磷酸化速度加快()
A.NAD/NADH的比值増高
B.ATP/ADP的比值増高
C.甲状腺素分泌増多
D.Na/K—ATP酶生成増多
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主要用于中、重度AD治疗的药物是()
A.石杉碱甲
B.多奈哌齐
C.加兰他敏
D.美金刚
E.卡巴拉汀
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线路自动投入装置在停用时先停直流后停交流的原因是()。
A.线路自动投入装置一般都是用接在交流回路中的电压继电器的常闭触点启动的;
B.如果在直流电源未停之前就将交流电源断开,就会造成自动投入装置的误动作;
C.在线路自动投入装置停用时,必须首先断开直流电源,然后再停交流电源;
D.在线路自动投入装置停用时,必须首先断开交流电源,然后再停直流电源。
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公司发行股票时,其发行价格()票面金额。
A.不得等于B.不得超过C.只能等于D.不得低于
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有关年轻恒牙龋齿的治疗以下说法不正确的是:()
A . A.应尽可能保存活髓
B . B.备洞时使用金刚车针,减速切削
C . C.修复牙体时特强调恢复接触点
D . D.备洞时注意预防性扩展
E . E.深龋使用再矿化治疗成功率较高
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地产销售代表王女士接受了为期4周的销售技能培训,以下针对该项人力资源培训开发的效果评价的方法哪些是正确的?()
A . 审查王女士的结业成绩和受训报告
B . 让王女士向其他销售代表示范学习的新技巧
C . 在适当的时候访问王女士的上司和同事,了解他们对王女士工作表现的看法
D . 比较王女士与其他未受训同事的工作业绩
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公安部督察委员会监督全国公安机关的督察工作。( )
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患者,女性,27岁。平时月经周期规律,现停经48天,近几天晨起恶心,厌油,有尿频症状。诊断为
A.病毒性肝炎
B.肾盂肾炎
C.早期妊娠
D.妊娠剧吐
E.继发性肝炎
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常用的空气滤清器有油浴式、干式、旋风式和组合式。
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飞机在飞行中出现的失速现象的原因是()
A . 翼梢出现较强的旋涡,产生很大的诱导阻力
B . 由于迎角达到临界迎角,造成机翼上表面附面层大部分分离
C . 由于机翼表面粗糙,使附面层由层流变为紊流
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某食品中含有大量的花青素,为避免其发生变色,下列材料所制成的包装容器中宜选用哪一种
A.铜B.铝 C.铁D.锡
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DSL(数字用户线路,DigitalSubscriberLine)是以()为传输介质的传输技术组合,它包括HDSL、SDSL、VDSL、ADSL和RADSL等,一般统称之为xDSL。
A.金属电话线
B.铜质电话线
C.铝质电话线
D.铁质电话线
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Listen to a short passage three times and fill in the blanks. Of all the threats to human society, including war, disease and natural disaster, one outranks all others. It is the aging of the human population. The 1) ________ of people aged 60-plus around the world is 2) ________ to more than double in 2050. By 2047, for the first time in human history, the number of old people is projected to exceed that of children on the planet. This change will 3) ________ on human society. One problem concerns the ratio of the number of people of working age to the number of older people, which is known as the "4) ________ support ratio". This index has fallen from 12 in 1950 to 8 in 2013 and is expected to drop to 4 in 2050. Its decline means that the burden on the young, 5) ________ and socially, will rise accordingly. This is because older people rely on the young, not only for care and support but also for the economic productivity that ensures 6) ________ can be paid and health and social costs met. A variety of issues in other areas such as family composition, the transfer of property, taxation and housing may 7) ________ the population "age-quake", too. For instance, family ties have been weakened by increased mobility and rising divorce, and hence the demand for 8) ________ and nursing homes will increase since more older people will need to live in an institution or elder care center. No matter what the future reality will be, the aging of the human population certainly 9) ________ policy makers, economists and health care specialists around the world. This suggests that the human society will need to 10) ________ a structure that has the ability and resources to address the diverse needs of older people.
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版记页如在单数页应放到(),版记始终在()页。
A.下一页;双数
B.下一页;单数
C.本页;双数
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