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【判断题】
投资者可以通过分散化投资来降低股票组合的非系统性风险和系统风险。（）A.
正确
B.
错误
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举一反三
【简答题】主轴回转轴线的误差运动可以分解为纯()、纯轴向窜动和纯()三种基本形式。
【简答题】血氧饱和度(词组,请写全称)
【单选题】( ) tired of Tom’s ll -talk-no-action, Julia decided to do the job all by herself.
A.
To get
B.
To have got
C.
Getting
D.
Have got
【单选题】主轴回转轴线的误差运动可以分解为纯径向跳动、纯轴向窜动和纯倾角摆动三种基本形式，其中，（）会造成镗出的孔呈椭圆形。
A.
纯径向跳动
B.
纯轴向窜动
C.
纯倾角摆动
D.
如果纯轴向窜动较大时
【多选题】设总体X~U(θ, 2)，未知参数θ<2. 设【图片】是总体X的简单随机样本，【图片】是样本均值，则下列估计量中不是θ的相合估计量的是
A.
B.
C.
D.
E.
F.
G.
H.
【单选题】Why is Tom so tired?
A.
He worked too hard in his garden.
B.
He didn't sleep well.
C.
He is not in a good mood.
D.
He had to look after a cat.
【简答题】______ tired of Tom's all-talk-no-action attitude, Julia decided to do the job all by herself A) To get B) To have got C) Getting D) Have got
【单选题】Tom was so tired that he fell _________on the bed and went to sleep
A.
off
B.
down
C.
away
D.
up
【简答题】,under UK law it is for companies to have differing dress polices for men and women
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