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【单选题】
已知单元体及应力圆如图所示, s 1 所在主平面的法线方向为 。
A.
n 1 ;
B.
n 2 ;
C.
n 3 ;
D.
n 4 。
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参考答案:
举一反三
【简答题】阅读理解. 'If you talk to the plants, they will grow faster and the effect is even better if you're a woman.' Researchers at Royal Horticultural Society carried out an experiment to find that the voice of...
【单选题】在PowerPoint 2010中,要设置幻灯片间切换效果(例如从一张幻灯片“溶解”到下一张幻灯片),应使用____选项卡进行设置。
A.
“动作设置”
B.
“设计”
C.
“切换”
D.
“动画”
【单选题】妊娠期高血压疾病最基本的病理变化为
A.
胎盘绒毛膜退行性变化
B.
水钠潴留
C.
全身小动脉痉挛
D.
弥散性血管内凝血
【单选题】地址FF02::2属于IPv6的(22)地址类型。
A.
单播地址(unicast address)
B.
组播地址(multicast address)
C.
任意播地址(anycast address)
D.
广播地址(broadcast address)
【判断题】IPv6 地址 2001:ABEF:224E:FFE2:BCC0:CD00:DDBE:8D58 不能简写
A.
正确
B.
错误
【单选题】苯乙醛在2720cm-1左右的特征吸收峰,是因为( )产生的,可以用来区分醛和酮类化合物。
A.
诱导效应
B.
共轭效应
C.
费米共振
D.
空间位阻
【简答题】“If you talk to the plants, they will grow faster and the effect is even better if you’re a woman.” Researchers at Royal Horticultural Society carried out an experiment to find that the voice of a wom...
【简答题】阅读理解。 Plants grow faster if you talk to them and the effect is even better if you're a woman. Researchers at Royal Horticultural (园艺的) Society carried out an experiment to find that the voice of a wom...
【单选题】Like all quintessentially British things, gardening is a pastime that has long been in decline. From a high point of £5 billion in 2001, spending on plants, tools and garden furniture has fallen every...
A.
Garden-related expenditure this year is more or less the same as that of last year.
B.
Many retailers are offering deep discounts.
C.
Prices of garden goods tend to remain stable in recent years.
D.
Due to the status quo of economy, garden goods are not promised a bright future.
【单选题】妊娠期高血压疾病最基本的病理变化是
A.
胎盘绒毛退行性变化
B.
肾小管重吸收功能低
C.
全身小动脉痉挛
D.
弥散性血管内凝血
E.
水钠潴留
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