皮皮学，免费搜题
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【单选题】
外口鳞状上皮与柱状上皮交界处系何种癌的好发部位A.
子宫颈癌
B.
输卵管癌
C.
阴道癌
D.
子宫内膜癌
E.
子宫体癌
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【简答题】设某平价债券的期限为5年，年利率为8%，面值为1000元，则该债券的期值为多少?
【简答题】设x、y、z为正实数，满足x-2y+3z=0，则 的最小值为多少？
【单选题】The word 'provided' in the second sentence of the 4th paragraph is closest in meaning to ______.
A.
supplied
B.
stipulated
C.
added
D.
suggested
【单选题】Pick the sentence that is punctuated correctly.
A.
"What are you going to dress up as," asked Matilda.
B.
"What are you going to dress up as?" asked Matilda.
C.
"What are you going to dress up as?asked Matilda.
【单选题】Pick the sentence that is punctuated correctly.
A.
"Let's go to the park." said Mark.
B.
"Let's go to the park," said Mark.
C.
"Let's go to the park" said Mark.
【单选题】关于心音描述错误的是
A.
第一心音发生于心缩期的开始，又称心缩音。其音调低，持续时间较长。
B.
第二心音发生于心舒期的开始，又称心舒音。其音调较高，但持续时间较短。
C.
第一心音产生的原因主要包括心室肌的收缩、房室瓣的关闭以及射血开始引起的主动脉管壁的振动。
D.
第二心音产生的原因主要包括半月瓣突然关闭、血液冲击瓣膜以及主动脉中血液减速等引起的振动。
E.
第一心音和第二心音同时发生，但间隔时间较长。
【单选题】Pick the sentence that is punctuated correctly.
A.
"I don't know about that," stated Lily.
B.
"I don't know about that, stated Lily."
C.
"I don't know about that," stated Lily."
【简答题】当振荡脉冲频率为12 MHZ时,一个机器周期为 μs ;当振荡脉冲频率为6 MHz时,一个机器周期为 μs 。
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