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【简答题】
武器的射击精度 是指(1) ,包括射击的(2) 和(3) 。
题目标签:
射击
精度
射击精度
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参考解析:
刷刷题刷刷变学霸
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【简答题】某人射击8枪,命中4枪,命中4枪中恰好有3枪连在一起的情况的种数是( )。 A.10B.20C.21D.28
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【单选题】精度为1/50mm的游标卡尺,其副尺每格为()。
A.
49/50mm
B.
19/20mm
C.
9/10mm
D.
0.02mm
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【单选题】在精度方面,电子衍射比X射线衍射( )。
A.
高
B.
低
C.
一样
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【单选题】已知距离AB=100m,丈量一次的权为2,丈量4次平均值的中误差为2cm,若以同样的精度丈量CD的距离16次,CD=400m,则两距离丈量结果的相对中误差分别为( 1/5000 )、(1/20000 )。
A.
对
B.
错
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【判断题】用高速钢车刀低速车削普通螺纹,能获得较高的螺纹精度和生产率。
A.
正确
B.
错误
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【单选题】上式为____式Adam法公式的矩阵形式,其精度为____阶。( )
A.
隐;p+1
B.
显;p
C.
隐;p
D.
显;p+1
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【单选题】Mr.Tuner had been a captain for many years. He was good at shooting (射击). In the army he taught new soldiers to shoot. Then he left the army and began to work in a bank as a night watchman. He worked ...
A.
The young man was good at shooting.
B.
Mr.Turner liked the young man very much.
C.
Mr.Turner disliked the young man.
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【单选题】Mr.Tuner had been a captain for many years. He was good at shooting (射击). In the army he taught new soldiers to shoot. Then he left the army and began to work in a bank as a night watchman. He worked ...
A.
Worked as a guard.
B.
Worked as a driver.
C.
Worked as a teacher.
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【简答题】点检的分工分()、专业点检、精度点检三种。
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【多选题】影响机床工作精度的主要因素是( )。
A.
机床的刚度
B.
机床的寿命
C.
机床的热变形
D.
机床的传动精度
E.
机床的振动
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