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【单选题】
如图9B-2所示,甲、个弹簧测力计放在水平面上并相互钩在一起,用水平拉力F1和 F2分别拉开,F1= F2=5 N,两弹簧测力计静 止时,下列分析正确的是( )
A.
甲对乙的拉力和的拉力是一对平衡力
B.
甲受力平衡，的拉力是5 N，甲的示数是5 N
C.
乙受力平衡，甲对乙的拉力是5 N，乙的示数是10 N
D.
甲和乙受到的合力均为零，示数均为零
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参考答案：
举一反三
【单选题】Good friends usually share the same interest and agree _____ most things but sometimes they also disagree _____ each other _____something [     ]
A.
on; with; to
B.
to; with; about
C.
on; with; on
D.
with; with; on
查看完整题目与答案
【判断题】技术进步是改善环境的根本动力。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】线刚度为i,远端铰支的单跨超静定梁,转动刚度为( )
A.
i
B.
2i
C.
3i
D.
4i
查看完整题目与答案
【单选题】friends usually speak highly of him.
A.
His some
B.
His many
C.
Many his
D.
Some his
查看完整题目与答案
【单选题】库房、室外道路等场所光源一般显色指数(Ra)为( )。
A.
Ra＜40
B.
Ra≥80
C.
80＞Ra≥60
D.
60＞na≥40
查看完整题目与答案
【单选题】The two friends usually have ____________ together. [     ]
A.
funs
B.
fun
C.
many funs
查看完整题目与答案
【单选题】同一表面的表面粗糙度轮廓幅度参数Ra值与Rz值的关系为(    )。
A.
Ra＞Rz    
B.
Ra=Rz    
C.
Ra＜Rz
D.
无法比较
查看完整题目与答案
【单选题】A是甲国驻乙国使馆的一等秘书,一日,A在乙国商店购买服装时,将一晚礼服窃走.后被发现。对此
A.
无论A是否反对，乙国都可以对A的行为提起刑事诉讼
B.
因A是外交人员，其行为可不受惩处
C.
乙国应通过外交途径与甲国交涉解决此问题
D.
如A同意放弃豁免，乙国可以对其提起刑事诉讼
查看完整题目与答案
【判断题】Old friends usually can understand each other without saying much.
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文：F: What do you and your friends usually do? M: We get together from time to time, do some sports, go out traveling and have some fun. F: What do you think is most important in friendship? M: Well...
A.
Climb mountains.
B.
Travel around.
C.
Go out for a picnic.
查看完整题目与答案
相关题目：
【单选题】Good friends usually share the same interest and agree _____ most things but sometimes they also disagree _____ each other _____something [     ]
A.
on; with; to
B.
to; with; about
C.
on; with; on
D.
with; with; on
查看完整题目与答案
【判断题】技术进步是改善环境的根本动力。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】线刚度为i,远端铰支的单跨超静定梁,转动刚度为( )
A.
i
B.
2i
C.
3i
D.
4i
查看完整题目与答案
【单选题】friends usually speak highly of him.
A.
His some
B.
His many
C.
Many his
D.
Some his
查看完整题目与答案
【单选题】库房、室外道路等场所光源一般显色指数(Ra)为( )。
A.
Ra＜40
B.
Ra≥80
C.
80＞Ra≥60
D.
60＞na≥40
查看完整题目与答案
【单选题】The two friends usually have ____________ together. [     ]
A.
funs
B.
fun
C.
many funs
查看完整题目与答案
【单选题】同一表面的表面粗糙度轮廓幅度参数Ra值与Rz值的关系为(    )。
A.
Ra＞Rz    
B.
Ra=Rz    
C.
Ra＜Rz
D.
无法比较
查看完整题目与答案
【单选题】A是甲国驻乙国使馆的一等秘书,一日,A在乙国商店购买服装时,将一晚礼服窃走.后被发现。对此
A.
无论A是否反对，乙国都可以对A的行为提起刑事诉讼
B.
因A是外交人员，其行为可不受惩处
C.
乙国应通过外交途径与甲国交涉解决此问题
D.
如A同意放弃豁免，乙国可以对其提起刑事诉讼
查看完整题目与答案
【判断题】Old friends usually can understand each other without saying much.
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文：F: What do you and your friends usually do? M: We get together from time to time, do some sports, go out traveling and have some fun. F: What do you think is most important in friendship? M: Well...
A.
Climb mountains.
B.
Travel around.
C.
Go out for a picnic.
查看完整题目与答案
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