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【判断题】
蛲虫主要通过“肛门-手-口”方式引起自身重复感染A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】When he applied for a______ in the office of the local newspaper he was told to see the manager.
A.
location
B.
promotion
C.
commission
D.
position
【单选题】When he applied for a______in the offices of the local newspaper, he was told to see the manager.
A.
work
B.
position
C.
career
D.
duty
【简答题】曲线 与 所围成的图形的面积是 。
【单选题】When he applied for a______ in the office of the local newspaper he was told to see the manager.
A.
location
B.
profession
C.
career
D.
post
【简答题】When he applied for a ________ in the office of the local newspaper he was told to see the manager. A) location B) profession C) career D) position
【单选题】When he applied for a ______ in the office of the local newspaper，he was told to see the manager．
A.
position
B.
profession
C.
career
D.
location
【简答题】所围面积为S的闭曲线长与所围同一面积S的圆周长之比值，称为该闭曲线的弯曲度． 等腰梯形ABCD(AD∥BC)，若AD=2a，∠BAD=α，欲使其弯曲度最小，梯形之形状如何？
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