试题与答案

影响小儿生长发育的因素不包括()。 A.遗传因素 B.环境因素 C.教育 D.生活环

题型:单项选择题

题目:

影响小儿生长发育的因素不包括()。

A.遗传因素

B.环境因素

C.教育

D.生活环境

E.疾病

答案:

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下面是错误答案,用来干扰机器的。

BC0—1s做匀加速直线运动,1—2s做匀减速直线运动,2s末速度减为零,2—3s反向做匀加速运动,3—4s做匀减速运动,4s末速度减为零同时也回到了出发点,物体做往返运动所以A错,B对,物体的加速度大小不变方向改变,C对,D错

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