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【多选题】
下列有关银杏科树木的选项中哪些是正确的。
A.
银杏为单科、、的孑遗植物
B.
银杏的小孢子叶球为下垂的总状花序
C.
银杏的果皮结构与桃的果皮类似
D.
银杏的叶片具有典型的掌状脉
E.
银杏的叶片在短枝上簇生在长枝上互生
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举一反三
【单选题】You are performing two sums, the first is a sum of two scalar variables and the second is a matrix sum of a pair of two— dimensional arrays—size 1000 by 1000. What speedup is achieved when the calcula...
A.
50
B.
100
C.
999
D.
none of the above
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【单选题】当齿数 ,压力角 的标准直齿圆柱外齿轮,其齿根圆( )基圆。
A.
大于
B.
等于
C.
小于
D.
小于且等于
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【判断题】铁素体用符号Fe表示
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正确
B.
错误
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【单选题】In a paragraph that has the following topic and body, which of the following is a better conclusion. Topic: The best time to take up piano lessons is between ages 4 and 10. Body: At this age, kids mem...
A.
All in all, if kids are interested in piano, parents should encourage them to take up piano lessons at an early age.
B.
In conclusion, next Lang Lang might be your kid!
C.
By the time they enter high school, they can no longer concentrate on piano lessons.
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【判断题】软件体系结构为软件系统提供了一个结构、行为和属性的高级抽象,由构成系统的元素的描述、这些元素的相互作用、指导元素集成的模式以及这些模式的约束组成。软件体系结构不仅指定了系统的组织结构和拓扑结构,并且显示了系统需求和构成系统的元素之间的对应关系,提供了一些设计决策的基本原理。
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D.
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E.
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【判断题】膳食纤维是一类多聚物的混合体,是不被人体肠道分泌物消化的植物成分,因此不属于人体必需的营养素
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正确
B.
错误
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相关题目：
【单选题】You are performing two sums, the first is a sum of two scalar variables and the second is a matrix sum of a pair of two— dimensional arrays—size 1000 by 1000. What speedup is achieved when the calcula...
A.
50
B.
100
C.
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D.
none of the above
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【简答题】At the age of four , our kids began to help us with the housework. They helped __ 1 __ their pets and clean the house. Now Tate can make her bed , __ 2 __ her clothes and set ( 布置 )the table. Last wee...
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【单选题】当齿数 ,压力角 的标准直齿圆柱外齿轮,其齿根圆( )基圆。
A.
大于
B.
等于
C.
小于
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小于且等于
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B.
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【简答题】Deborah Sampson was born in Massachusetts , U S in 1760. She was the fifth oldest of the seven children in her family. The family was so poor that the mother sent the kids off to live with friends and...
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【单选题】In a paragraph that has the following topic and body, which of the following is a better conclusion. Topic: The best time to take up piano lessons is between ages 4 and 10. Body: At this age, kids mem...
A.
All in all, if kids are interested in piano, parents should encourage them to take up piano lessons at an early age.
B.
In conclusion, next Lang Lang might be your kid!
C.
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查看完整题目与答案
【判断题】软件体系结构为软件系统提供了一个结构、行为和属性的高级抽象,由构成系统的元素的描述、这些元素的相互作用、指导元素集成的模式以及这些模式的约束组成。软件体系结构不仅指定了系统的组织结构和拓扑结构,并且显示了系统需求和构成系统的元素之间的对应关系,提供了一些设计决策的基本原理。
A.
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B.
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【单选题】对该患儿的处理哪项不妥
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C.
逐渐复温,6~12小时使体温恢复正常
D.
多喂奶,保证足够能量摄入
E.
立即置入32℃暖箱内保暖
查看完整题目与答案
【判断题】膳食纤维是一类多聚物的混合体,是不被人体肠道分泌物消化的植物成分,因此不属于人体必需的营养素
A.
正确
B.
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