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【单选题】
急性阑尾炎穿孔腹穿（）。A.
血性渗液，且淀粉酶含量高
B.
不凝固血液
C.
含臭味脓液
D.
渗液混有食物残渣
E.
淡黄色液体
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知识点：
皮皮学刷刷变学霸
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【简答题】若一个数的算术平方根是 ,则这个数是
【简答题】若一个数的算术平方根是 ,则这个数是 .
【单选题】下面选项中关于相关分析和回归分析描述不正确的是
A.
相关分析与回归分析不仅具有共同的研究对象,而且在具体应用时、常常必须互相 补充
B.
回归分析中自变量是随机的，而把因变量作为研究时给定的非随机变量
C.
相关分析研究变量之间相关的方向和相关的程度
D.
回归分析则需要依靠相关分析来表明现象数量变化的相关程度
【判断题】回归分析和相关分析在应用时,常常需要互相补充,相关分析需要依靠回归分析来表明现象数量相关的具体形式系,回归分析需要依靠相关分析来表明现象数量变化的相关程度。
A.
正确
B.
错误
【简答题】若一个数的算术平方根是8，则这个数是______．
【单选题】听力原文：M: Do you go to the theatre regularly? W: Well, off and on. What does the woman mean?
A.
She goes to the theatre occasionally.
B.
She doesn't like going to theatres.
C.
She goes to theatres very often.
D.
She goes to theatres only when she is off duty.
【单选题】听力原文：W: What do you want to do now? M: I want to go back to the hotel. W: But it's only four o'clock. M: I'm tired. We've done a lot of sightseeing. W: We can still go shopping. The stores don't close...
A.
Citizens of the city.
B.
Tourists visiting the city.
C.
A couple looking for work.
【单选题】听力原文：W: It seems that you love this activity. Then how often do you go to the cinema? M: About four times a week. But it also depends on the movie. About how many times does the man go to the cinema i...
A.
Three．
B.
Four．
C.
Eight．
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