皮皮学，免费搜题
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【单选题】
停经12，阴道有少量流血及下腹轻微腹痛，但开，尿妊娠试验阳性，子宫大小与妊娠月份相符，属于A.
先兆流产
B.
难免流产
C.
完全流产
D.
过期流产
E.
稽留流产
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
【多选题】下列关于提高礼仪认识的说法正确的是
A.
提高对营销礼仪的认识是进行礼仪修养的起点。
B.
提高对营销礼仪的认识 是实现营销礼仪修养其他环节的前提和基础。
C.
提高营销礼仪认识是将礼仪规范逐渐内化的过程。
D.
开阔视野，增加礼仪知识的重要途径。
【单选题】在Windows7中,选定多个连续的文件或文件夹,应首先选定第一个文件或文件夹,然后按( )键,单击最后一个文件或文件夹。
A.
Eec
B.
Ctrl
C.
Alt
D.
Shift
【单选题】The predictability of our mortality rates is something that has long puzzled social scientists. After all, there is no natural reason why 2,500 people should accidentally shoot themselves each year or...
A.
The mortality rate can not be predicted.
B.
The death toll remained stable year after year.
C.
A quota for each type of death has not come into being.
D.
People lost their lives every year for this or that reason.
【单选题】Lately social scientists have begun to ask if culture is found just in humans, or if some animals have culture too. When we speak of culture, we mean a way of life a group of people have in common Cul...
A.
the history of animal learning
B.
the difference between animals' culture and that of human beings
C.
the various aspects of animals culture
D.
the dividing line between animals and human beings
【单选题】在windows7中,选定多个连续的文件或文件夹,应该首先选定第一个文件或文件夹,然后按( )键,单击最后一个文件或文件夹。
A.
Tab
B.
Alt
C.
Shift
D.
Ctrl
【简答题】电枢反并联可逆调速系统中，当电动机正向制动时，反向组晶闸管变流器处于( ) A.整流工作状态、控制角a90° C.整流工作状态、控制角a>90° D.有源逆变工作状态、控制角a<90°< /div>
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