The pupil is located in the eye chambers and at the edge of the iris.
错误
举一反三
- Chambers are traditionally located in ( ).
- France is located on the ___ edge of Europe.（ ）
- The images that we see are recorded in （） A: the brain B: the eye C: the retina of eye D: the pupil
- France is located on the ___ edge of Europe.（ ）. A: eastern B: northern C: southern D: western
- France<br/>is located on the ____<br/>edge of Europe. A: western B: eastern C: southern D: northern
内容
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The scavenging air ports are located at （） that they are just exposed by the upper edge of the piston when the piston is in the bottom dead center position.
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Potato tubers are located at A: A. Top of stolon B: B. Top of stolon C: C. Top of underground stem D: D. Top of bud eye root
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下面IRIS和ISO9001的关系描述正确的是（） A: IRIS不包含ISO9001 B: ISO9001包含IRIS C: IRIS包含ISO9001 D: 以上都不对
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以下会报错的是: A: head(iris$Sepal.Width) B: head(Sepal.Width) C: attach(iris)head(Sepal.Width) D: attach(iris)head(Sepal.Width)detach(iris)head(Sepal.Width)
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读取鸢尾花数据集iris前6行中的前4列数组元素，执行下列_______语句可以实现。 A: iris[6, 4] B: iris[:5, :3] C: iris[0:6, 0:4] D: iris[0:5, 3]