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【单选题】
在进行成组设计资料的t检验之前,要注意两个前提条件:一是考察两样本是否来自正态总体,二是要A.
作变量变换
B.
核对数据
C.
求均数、标准差和标准误
D.
作方差齐性检验，看方差是否满足齐性
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皮皮学刷刷变学霸
举一反三
【单选题】An English friend invites you to tea at 4 pm. What do you think or say?
A.
What a treat! I love the sandwiches and cakes. Carrot cake is my favorite!
B.
“Sure, but I’ll only have five or ten minutes as I’m studying.”
C.
“Thank you, I’d love a cup of tea!”
D.
“Yes, but any chance of having tea at 6 pm or 7 pm?”
【简答题】期末将“销售费用”账户的余额转入“本年利润”账户的 ,结转后该账户无余额。
【单选题】某办公楼采用集中式供暖系统,非工作时间供暖系统停止运行。该供暖系统施工图设计中,热负荷计算错误的是下列何项?
A.
间歇附加率取20%
B.
对每个供暖房间进行热负荷计算
C.
间歇附加负荷等于围护结构基本耗热量乘以间歇附加率
D.
计算房间热负荷时不考虑打印机、投影仪等设备的散热量
【单选题】An English friend invites you to tea at 4pm. What do you think or say?
A.
What a treat! I love the sandwiches and cakes. Carrot cake is my favourite!
B.
"Sure, but I'II only have five or ten minutes as I'm studying.
C.
"Thank you, I'd love a cup of tea!
D.
"Yes, but any chance of having tea at 6 pm or 7 pm?
【简答题】He was lying on his side watching her.
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