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【判断题】
观察是人们认识世界、进行各种创造性劳动的基础。A.
正确
B.
错误
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举一反三
【多选题】108-3 关于斜弯曲变形的下述说法,正确的是 ______ 。
A.
是在两个相互垂直平面内平面弯曲的组合变形；
B.
中性轴过横截面的形心；
C.
挠曲线在载荷作用面内；
D.
挠曲线不在载荷作用面内。
【单选题】Brothers and sisters often look a bit different from each other because
A.
they have somewhat different genes.
B.
their father's genes are different from their mother's.
C.
their parents want them to have individual features.
D.
they were born in different places.
【简答题】Alice’s mother died when she was five. Although her brothers and sisters were loving and caring, their love couldn’t take the place of a mother’s. In 1925 Alice became my mother and told me that her f...
【简答题】补全短文。 There is a park near my home, but I don't go there very often. One afternoon I went into the 1 and found it was really small. In the park, there were two different ways. One was wide and clean. ...
【简答题】希望小学三年级有男学生228人，女学生199人．希望小学三年级有学生多少人？
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