【单选题】While, almost every department of the federal government is concerned about and involved with some aspects of education, and【C1】______.federal government influence is an important【C2】______in educatio...
【单选题】()颜色模式既不依赖于光线和颜料,也不依赖于设备。
【简答题】As far as foreign trade is concerned, the following three risks are covered _____________ an insurance policy, namely, F. P. A., W. P.A. and All Risks.
【简答题】阅读材料 ,回答问题。 材料一 下表是中华人民共和国成立前土地情况调查表。 阶级成分 占总人口数量 占总土地数量 地主、富农 10% 70%~80% 贫农、中农、雇农 90% 20%~30% 材料二 1952年底,3亿多农民分到了大约7亿亩土地和一定的生产资料。全国农业总产值从1949年的362亿元增加到1952年的461亿元,粮食总产量迅速增长,农民收入大大提高。 (1)上面两则材料共同反映了哪...
【简答题】Shyness is the cause of much unhappiness for a great many people. Shy people are anxious and self-conscious; that is, they are excessively concerned with their won appearance and actions. Worrisome th...
【单选题】( ) 颜色模式既不依赖于光线和颜料 , 也不依赖于光线和颜色 , 也不依赖于设备 。
【简答题】On a particular day, the spot rate between Czech koruna (CKR) and the U.S. dollar is CKR30.35/$, while the interest rate on a one-year financial instrument in Czech is 7.5% and 3.5% in U.S. (8 credits...
【单选题】关于回归方程自变量子集对拟合优劣的影响,以下说法正确的是
A.
自变量子集在扩大时,残差平方和随之增大,复决定系数也随之增大。
B.
自变量子集在扩大时,残差平方和随之减少,复决定系数也随之减少。
C.
自变量子集在扩大时,残差平方和随之减少,而复决定系数随之增大。
D.
自变量子集在扩大时,残差平方和随之增大,而复决定系数随之减少。