皮皮学，免费搜题
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【单选题】
精子头部的顶体中不含有A.
水解酶
B.
顶体蛋白酶
C.
糖蛋白
D.
酸性磷酸酶
E.
透明质酸酶
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W: Where do you think you lost the wallet? M: I don't have any idea I had an appointment with Dr. Baker at nine o'clock. W: What time did you leave his office? M: At about 9: 30 or 9: 35. Then I ...
A.
Losing money.
B.
Dr. Baker.
C.
Taxi.
【单选题】听力原文：W: Where do you think you lost the wallet? M: I don't have any idea I had an appointment with Dr. Baker at nine o'clock. W: What time did you leave his office? M: At about 9:30 or 9:35. Then I we...
A.
At 9:30.
B.
At 9:35．
C.
At 9:30 or 9:35.
【单选题】气路管路连接时,要求( )。
A.
应避免直角或锐角弯曲尽量平行布置，不要求气管的长短
B.
可随意布线，但力求走箱合理且气管最短
C.
应避免直角或锐角弯曲尽量平行布置，力求走箱合理且气管最短
D.
可随意布线，不要求气管的长短
【简答题】道牙的构造形式有 和 两种。
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