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【单选题】
不属于正态分布的特征有:A.
正态分布曲线均数处最高
B.
正态分布有两个参数,即位置参数和形态参数
C.
正态分布以均数为中心,左右对称
D.
正态分布曲线可以有多峰
E.
正态分布曲线在横轴的上方
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】下列属于凯恩斯货币需求理论的观点是（ ）。
A.
人们对货币产生需求是因为偏好货币的流动性
B.
交易性货币需求主要受收入的影响
C.
投机性货币需求主要受利率的影响
D.
投机性货币需求稳定可测
E.
最佳预防性货币余额的变化与货币支出分布的方差呈立方根关系
【单选题】The writer implies that____.
A.
difficult operation can be successfully performed all over the world now
B.
compared to the 'third revolution' in surgery,the first two are less important
C.
all patients can be cured by a gall bladder-removal operation
D.
a new breakthrough has been made in surgery
【单选题】下图是磨粒的磨削过程图,步骤123分别是什么()。
A.
滑擦阶段、耕犁阶段、切削阶段
B.
耕犁阶段、切削阶段、滑擦阶段
C.
切削阶段、耕犁阶段、滑擦阶段
D.
切削阶段、滑擦阶段、耕犁阶段
【单选题】下图是磨粒的磨削过程图,步骤123分别是什么
A.
耕犁阶段、切削阶段、滑擦阶段
B.
滑擦阶段、耕犁阶段、切削阶段
C.
切削阶段、滑擦阶段、耕犁阶段
D.
切削阶段、耕犁阶段、滑擦阶段
【单选题】The writer implies that it's not advisable to look for love in cyberspace.
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】In the last paragraph, the writer implies that active learning______.
A.
is important for you to remember more within the shortest possible time
B.
can not be easily accepted
C.
may test material
D.
is serviceable for reading and listening
【简答题】The passage implies that the writer and her boyfriend live in
【单选题】The writer implies that one disadvantage of town shops is that ______.
A.
their prices are higher
B.
people cannot telephone them
C.
their staff may take less trouble to satisfy customers
D.
one has to queue up to pay in them
【单选题】In Paragraph 4 the writer implies that fertile soils are______.
A.
limited
B.
renewable
C.
nonrenewable
D.
productive
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