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【单选题】
在Excel2007工作表中,第1行第1列的单元格表示为( )。A.
11
B.
AA
C.
A1
D.
1A
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反馈参考答案：
举一反三
【单选题】Whose arm did Bartholdi use as the model?
A.
his mother's
B.
his wife's
C.
his sister's
D.
Barbie's
【单选题】They did an experiment because they _____________.
A.
wanted to know whose watch was better
B.
liked their lab
C.
wanted to repair their watches
D.
had a basin of water in their lab
【简答题】()is a robot whose arm has three prismatic joints
【单选题】某校高三年级有男生 500 人,女生 400 人,为了了解该年级学生的健康情况,从男生中任意抽取 25 人,从女生中任意抽取 20 人进行调查.这种抽样方法是
A.
简单随机抽样法
B.
抽签法
C.
随机数表法
D.
分层抽样法
参考解析：
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