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【单选题】
Now, go through TEXT I quickly and answer questions 85 and 86. Irish dance: The Irish International Dance Company, one of the most dynamic dance troupes in the world, will tour China with its classic production“ Spirit of t he Dance—the New Millennium.” The dancers include such famous names as Patricia Murray, one of the Irish dancing champions, and first rate ballerina Claire Holding. Sponsored by China National Culture and Art Company Ltd., the dancing troupe will give three performances at the Century Theatre. Time:7:30 pm, June 23-25 Place: Century Theatre, 40 Liangmaqiaolu, Chaoyang District Telephone: 6551 - 8888 Piano solos: twenty Chinese and foreign piano music works will be playedby three young, promising pianists from the China Central Conservatory of Music. Programmes include: “Consolation No 3 in D-flat major” by Liszt,“ For Elise” by Beethoven, “Turkish March” by Mozart, “Waltz in C-sharp minor” and “A Minute Waltz” by Chopin, and “Hungarian Dance” by Brahms. Time:7:30 pm, June 16 Place: Beijing Concert Hall, 1 Beixinhuajie, Xicheng District Telephone: 6605- 5812 TEXT J First read the following questions. 87. When is the deadline for the competition?
A.
May 7.
B.
May 5.
C.
June 18.
D.
June 15
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【单选题】对于Excel2010单元格中数字保留1位小数,输入数字1.67后将显示 ( )
A.
1.1
B.
1
C.
1.7
D.
1.
【多选题】设随机变量y对随机变量x的线性最小方差估计为x^=proj(x|y),则
A.
E(x)=E(x^)
B.
x-x^⊥x^
C.
E[(x-x^)y] =0
D.
x-x^⊥L(y)
【多选题】设随机变量y对随机变量x的线性最小方差估计为 x^= ,则有以下性质
A.
x^与y正交
B.
x-x^与y正交
C.
x^∈L(y)
D.
x-x^∈L(y)
【多选题】设随机变量y对随机变量x的线性最小方差估计为 x^= ,则有以下性质
A.
x^与y不相关
B.
x-x^与x^正交
C.
x^∈L(y)
D.
x-x^⊥L(y)
【单选题】对于Excel 2010单元格中数字保留1位小数,输入数字1.67后将显示
A.
1.1
B.
1
C.
1.7
D.
1.6
【单选题】四氯化碳按官能团分类应该属于
A.
烷烃
B.
烯烃
C.
卤代烃
D.
芳香烃
【单选题】四氯化碳按官能团分类应该属于
A.
烷烃
B.
烯烃
C.
卤代烃
D.
羧酸
【多选题】设随机变量y对随机变量x的线性最小方差估计为x^=proj(x|y),则
A.
E(x~)=0
B.
x~⊥x^
C.
E[(x-x^)y] =0
D.
x^⊥L(y)
【判断题】科学擘画现代化新龙江建设的宏伟目标,要着力建设工业强省、农业强省、科教强省、文化强省、生态强省、旅游强省。
A.
正确
B.
错误
【单选题】“勇”字,与( )是相通的。
A.
B.
C.
D.
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