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【单选题】
如图所示,质量为m的小滑块沿倾角为θ的斜面向上滑动,经过时间t 1 速度变为零然后又下滑,经过时间t 2 回到斜面底端,滑块在运动过程中受到的摩擦力大小始终为F 1 .在整个过程中,重力对滑块的总冲量为
A.
mgsin θ(t 1 +t 2 )
B.
mgsin θ(t 1 -t 2 )
C.
mg(t 1 +t 2 )
D.
0
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参考答案：
举一反三
【单选题】预算是用()表示预期结果的一种计划形式。
A.
文字
B.
数字
C.
指标
D.
图表
查看完整题目与答案
【判断题】The aim of marketing is to make selling and advertising superfluous.
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to management guru Peter Drucker, "The aim of marketing is to ________."
A.
create customer value
B.
identify customer demands
C.
make selling unnecessary
D.
set realistic customer expectations
E.
sell products
查看完整题目与答案
【简答题】Task 4 This exercise will help you with the vocabulary that you don’t know. Read the following two sentences. Figure out the meanings of the underlined words from the context and write them down on th...
查看完整题目与答案
【判断题】项羽分封天下后,刘邦最先发动叛乱。()
A.
正确
B.
错误
查看完整题目与答案
【判断题】去老师家可以不用提前联系,准时到达即可。()
A.
正确
B.
错误
查看完整题目与答案
【多选题】多选题:下列苏宣的篆刻风格说法正确的有哪些?
A.
吸收汉将军印欹斜和汉铸印并笔的手法
B.
其风格接近何震
C.
刀法切中带冲
D.
线条凝练
查看完整题目与答案
【单选题】According to management guru Peter Drucker, "The aim of marketing is to ________."
A.
maximize profits of the company
B.
emphasize customer wants and not customer needs
C.
make selling unnecessary
D.
fulfill unrealistic customer expectations
查看完整题目与答案
【单选题】According to management guru Peter Drucker, "The aim of marketing is to ________."
A.
maximize profits of the company
B.
emphasize customer wants and not customer needs
C.
make selling unnecessary
D.
fulfill unrealistic customer expectations
E.
sell products
查看完整题目与答案
【判断题】the aim of marketing is to make selling necessary.
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】预算是用()表示预期结果的一种计划形式。
A.
文字
B.
数字
C.
指标
D.
图表
查看完整题目与答案
【判断题】The aim of marketing is to make selling and advertising superfluous.
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to management guru Peter Drucker, "The aim of marketing is to ________."
A.
create customer value
B.
identify customer demands
C.
make selling unnecessary
D.
set realistic customer expectations
E.
sell products
查看完整题目与答案
【简答题】Task 4 This exercise will help you with the vocabulary that you don’t know. Read the following two sentences. Figure out the meanings of the underlined words from the context and write them down on th...
查看完整题目与答案
【判断题】项羽分封天下后,刘邦最先发动叛乱。()
A.
正确
B.
错误
查看完整题目与答案
【判断题】去老师家可以不用提前联系,准时到达即可。()
A.
正确
B.
错误
查看完整题目与答案
【多选题】多选题:下列苏宣的篆刻风格说法正确的有哪些?
A.
吸收汉将军印欹斜和汉铸印并笔的手法
B.
其风格接近何震
C.
刀法切中带冲
D.
线条凝练
查看完整题目与答案
【单选题】According to management guru Peter Drucker, "The aim of marketing is to ________."
A.
maximize profits of the company
B.
emphasize customer wants and not customer needs
C.
make selling unnecessary
D.
fulfill unrealistic customer expectations
查看完整题目与答案
【单选题】According to management guru Peter Drucker, "The aim of marketing is to ________."
A.
maximize profits of the company
B.
emphasize customer wants and not customer needs
C.
make selling unnecessary
D.
fulfill unrealistic customer expectations
E.
sell products
查看完整题目与答案
【判断题】the aim of marketing is to make selling necessary.
A.
正确
B.
错误
查看完整题目与答案
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