皮皮学，免费搜题
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搜题
【单选题】
轨距是钢轨顶面下____mm范围内两股钢轨作用边最小距离。A.
16
B.
5
C.
10
D.
15
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】粗纤维包括 _____ 、 ______ 和 _____ ,无氮浸出物包括 _____ 、 ______ 和 _____ 。
【判断题】画图时,为了作图简便,一般将变形系数简化这样在画正等轴测图时,凡是平行于投影轴的线段,就可以直接按立体上相应的线段实际长度作轴测图,而不需要换算。
A.
正确
B.
错误
【单选题】___________ 查看材料
A.
The city trying to stop the spread of graffiti， has painted over some of the murals complete.
B.
This striking work depicts two people facing each other on opposite sides of the freeway near downtown Los Angeles.
C.
Artists like murals because they like the work of Mexican artitsts.
D.
Now the city is beginning a huge project to restore the city's murals.
E.
The mural represents the history of ethnic proups in California.
F.
Soon their murals became a symbol of the city's cultural expressions and a showcase for LA's cultural diversity.
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