在生态系统中，哪些生物能利用和分解人粪尿中的有机物_刷题宝

题干

在生态系统中，哪些生物能利用和分解人粪尿中的有机物（）

A：动物

B：植物

C：动物和植物

D：细菌和真菌

上一题下一题 0.0难度选择题更新时间:2019-04-15 01:08:50

答案(点此获取答案解析）

D

同类题1

\vec{a}

\vec{b}

\vec{c}

是非零向量，已知命题p：若

\vec{a}

\vec{b}

\vec{b}

\vec{c}

\vec{a}

\vec{c}

=0；命题q：若

\vec{a}

\vec{b}

\vec{b}

\vec{c}

\vec{a}

\vec{c}

，则下列命题中真命题是（）

同类题2

Come and have a look at my photo.

There are five people in my family. They are my grandpa, my grandma, my father, my mother and I.

My father is a driver. He works in his car. My mother is a teacher, she works in the school. I'm a pupil. I study hard. My grandpa and grandma don't work. They are old, but they can cook meals for us.

I love them and they love me, too.

根据短文内容，判断正误。

同类题3

如图，两座建筑物AD与BC，其地面距离CD为60cm，从AD的顶点A测得BC顶部B的仰角α=30°，测得其底部C的俯角β=45°，求建筑物BC的高（结果保留根号）

同类题4

—I hear you will go to England. When are you going to set off?

—On 1st June. I need to prepare a lot for that.

同类题5

先按下面的步骤计算并填空，再把每一步计算的结果同前面的数作比较，你发现了什么？

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