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【单选题】
当 截平面与圆柱轴线 平行时, 截交线所围成的形状 是 :A.
椭圆
B.
圆
C.
矩形
D.
三角形
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皮皮学刷刷变学霸
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【判断题】I don't have to wear a mask when I go to a supermarket as long as I keep away from others.
A.
正确
B.
错误
【单选题】I don't have any shirts to wear.They're all clean but I didn't have time to_______.
A.
a.do the drying
B.
b.di the ironing
C.
c.both:they're the asme
【简答题】And I finally have . So now I'm back to adopting many -- not all; I don't wear a helmet anymore -- but dozens of healthy behaviors that I adopted during my year. It was really a life-changing project....
【单选题】At school l ___ wear a uniform and I ___ keep my hair short A.can't; have to B.have to; must C.don't have to;must
A.
can＇t； have to
B.
have to； must
C.
don＇t have to；must
【简答题】电磁机构的结构主要有_____、_______、_______
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