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【单选题】
下列命令中可以在选定的单元格区域内按行合并单元格的是A.
合并后居中
B.
跨越合并
C.
合并单元格
D.
取消单元格合并
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反馈参考答案：
举一反三
【单选题】下列为维护国家主权和领土完整、保卫人民生命财产安全,英勇抗击外国侵略的人物有 1郑成功 2戚继光 3康熙帝 4左宗棠 5郑和 6张骞
A.
①②④
B.
①②③④
C.
①②④⑤
D.
①②③⑥
【多选题】串联电流负反馈对放大电路性能的影响( )。
A.
增大输入电阻
B.
减小输入电阻
C.
增大输出电阻
D.
减小输出电阻
E.
稳定电压放大倍数
F.
稳定电流放大倍数
【简答题】We can say that Taiji diagram is also a realistic e_____ (something that represents an idea exactly) of Wheeler's Simplicity/Austerity principle. (time: 11:10)
【单选题】We can say that going to study abroad ________ one's own expense has become an important channel in our country for overseas education.
A.
at
B.
on
C.
in
D.
for
【单选题】We can say that an activity is _____ if the students feel confident that they can do it.
A.
doable
B.
interesting
C.
relevant
D.
fun
【单选题】在放大电路中，引入串联电压负反馈后，对放大电路性能的影响是( )。
A.
提高输入电阻，减小输出电阻
B.
减小输入电阻，提高输出电阻
C.
提高输入电阻，提高输出电阻
D.
减小输入电阻，减小输出电阻
【多选题】If an offer includes the following characteristics at the same time, we can say that this is a firm offer.
A.
Term of validity
B.
Affirmative and unconditional
C.
With reservations
D.
Clarity and completeness
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