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【单选题】
不属于亲水性有机溶剂的是A.
正丁醇
B.
丙酮
C.
甲醇
D.
乙醚
E.
酸水
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】按照时间顺序先后衔接的项目阶段的集合称为______。
【简答题】平键的()是工作面,靠()的相互挤压来传递转矩。
【简答题】假定某一个数据列表是一个班级的计算机课程成绩，若要统计90分以上的同学人数，则应使用_______函数。
【单选题】It can be inferred from the second paragraph that ______.
A.
Isaac Asimov will make new laws to replace the old ones.
B.
the Three Laws of Robotics have been invalidated.
C.
the book I, Robot was published in Hollywood.
D.
Isaac Asimov has shifted his attention to films.
【单选题】—When did the old man die? —In 2004. He _______ for nearly ten years.
A.
died
B.
has died
C.
is dead
D.
has been dead
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