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【单选题】
患者女性,25岁。停经11,1个月前自测尿妊娠试验阳性,恶心、呕吐3,近1加重,做B超提示宫内早孕。HCG的分泌量达高峰的时间是在A.
妊娠第8 -10
B.
妊娠第16 – 18
C.
妊娠第26 – 28
D.
妊娠第32 – 34-
E.
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举一反三
【简答题】（2）关于以太网接入方式下的接入控制设备，以下哪一项描述是错误的( )。
【简答题】Life is like the four seasons. Now I am very old, but when I was young, it was the spring of my life. After I was born, I played a lot, and then I started school. I learned many new things. Like a flo...
【单选题】In England, people often talk about the weather because they can experience four seasons in one day. In the morning the weather is warm just like in spring. An hour later' black clouds come and then i...
A.
Because they may have four seasons in one day.
B.
Because they often have very good weather.
C.
Because the weather is warm just like in spring.
D.
Because the sky is sunny all day.
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