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【单选题】
设连续型随机变量的分布函数为 【图片】则概率 【图片】（ ）。A.
0.3
B.
0.25
C.
0.20
D.
0.15
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举一反三
【简答题】以下代码 {{this.$store.state.name}}var store = new Vuex.Store({ state:{name:'store'}})var vm = new Vue({el:'#app',store})中的this指的是（）。A. 标签 B. window对象 C. store实例 D. Vue实例
【简答题】在线性和各向同性的导电媒质中,电流密度J 、电导率 σ 和电场强度E 之间的关系为 ,此关系式称为欧姆定律的微分形式。
【简答题】Youth often have a great deal of authority in store-selection decisions, which means that stores must _________________(用有效办法吸引他们).
【简答题】The store has an excellent for fair dealing and its booming sales figures are often reported in local newspapers. A. regulation B reputation C. presentation D. exception
【简答题】标准输入流是指从标准输入设备(键盘)流向程序的______.
【单选题】The Internet allows rural school children about what is happening in the world.
A.
to learn
B.
learning
C.
learn
D.
Learned
【单选题】Why are store managers often the last to hear complaints?
A.
Most customers won’t bother to complain even if they have had unhappy experiences.
B.
Customers would rather relate their unhappy experiences to people around them.
C.
Few customers believe the service will be improved.
D.
Customers have no easy access to store managers.
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