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【单选题】
掷两颗均匀的骰子,出现“点数和为3”的概率是( )A.
掷两颗骰子出现的点数搭配，有36种等概率的情况．和为3的情况有几种？只有(1,2), (2,1).
B.
× 掷两颗骰子出现的点数搭配，有36种等概率的情况. 其和为3的情况有几个？
C.
+ 掷两颗骰子出现的点数搭配，有36种等概率的情况．和为3的情况有几种？
D.
+ 掷两颗骰子出现的点数，共有36 种等概率情况. 之和为3的情况只有以下2种，即(1,2)和(2,1)，而且是等概率的，故 P (点数和为3〕＝ +
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举一反三
【单选题】In the first paragraph, the word 'apparatus' means ______ .
A.
lung
B.
Liver
C.
equipment
D.
machine
【单选题】What are there in the library except books?
A.
Pictures, machines and hotels.
B.
Movies, machines and old stamps.
C.
Pictures, movies and experts.
【单选题】The main point of the first two paragraphs can best be illustrated as______.
A.
when a machine like a rotary engine malfunctions, it is the technologist who is best equipped to repair it
B.
a telephone is a complex instrument designed by technologists using only nonverbal thought
C.
the designer of a new refrigerator should consider the designs of other refrigerators before deciding on its form
D.
the distinctive features of a suspension bridge reflect its designer's conceptualization as well as the physical requirements of its site
【多选题】企业在内部控制评价实际操作中，评价结果的客观性往往受到现实各方面因素的影响，表现在()
A.
高管层对工作重视不够，有意回避存在的问题
B.
评价人员业务能力不强，缺乏科学的评价手段，对存在的风险识别不足
C.
内部控制、审计、专业部门沟通不够，信息无法共享
D.
内部控制评价独立性不强，评价过程中受下属单位管理层干涉
【单选题】A communcitions protocal is a set of（）for exchanging information over a network.
A.
machine
B.
software
C.
rules
D.
hardware
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