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【多选题】
如图所示,小球m在竖直放置的光滑的圆形管道内做圆周运动,下列说法正确的是( )A.
小球通过最高点时的最小速度是
B.
小球通过最高点时的最小速度为零
C.
小球在水平线ab以下的管道中运动时外侧管壁对小球一定无作用力
D.
小球在水平线ab以下的管道中运动时外侧管壁对小球一定有作用力
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【简答题】Theresults of the study have certainly _____ the money that has been spent onthe project.A. control B. false C. justified D. just
【单选题】Our new science teacher comes from either New York or Washington. But I can’t remember _______.
A.
where
B.
there
C.
which
D.
that
【单选题】Money that has been or will be paid regardless of the decision whether or not to proceed with the project is:
A.
cannibalization
B.
considered as part of the initial investment in the project.
C.
an opportunity cost.
D.
a sunk cost.
【单选题】The results of the study have certainly _________ the money that has been spent on the project.
A.
looked
B.
borrowed
C.
justified
D.
justifiy
【单选题】在教室管理信息系统程序调试的过程中，程序员发现教室使用情况查询与情况不同。程序员于是首先通过分析错误的外在表现形式，猜想程序故障的大概位置，然后采用一些简单的纠错技术，获得可疑区域的有关信息，判断猜想是否正确，经过多次试探，找到了错误根源。程序员采用的排错方法是（）。
A.
试探法
B.
演绎法
C.
反向跟踪法
D.
正向跟踪法
【单选题】The results of the study have certainly _________ the money that has been spent on the project.
A.
looked
B.
borrowed
C.
justified
D.
lent
【单选题】在社团活动管理信息系统调试的过程中，程序员发现社团成员模块有错误。程序员沿着从错误征兆的线索出发，分析这些线索之间的关系，确定错误的位置。程序员采用的排错方法是（）。
A.
试探法
B.
归纳法
C.
跟踪法
D.
演绎法
【单选题】A company's or organization's ______ are its records of money that has been spent and earned or of the names of people who belong to it.
A.
accounts
B.
finances
C.
books
D.
investments
【简答题】The results of the study have certainly _________ the money that has been spent on the project.( justify )
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