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【多选题】
工地消防安全需要配备( )
A.
灭火器箱
B.
灭火器
C.
黄沙桶
D.
水枪
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参考答案：
举一反三
【单选题】一圆柱直齿齿轮,模数为4,齿数为18,其齿顶圆直径为( )mm。
A.
72
B.
80
C.
85
D.
90
查看完整题目与答案
【单选题】已知一对正确安装的标准渐开线圆柱齿轮传动,其压力角ɑ= ,模数m=4mm,传动比i12=3,中心距a=144mm。则两齿轮的分度圆直径分别为
A.
18mm和54mm
B.
20mm和60mm
C.
72mm和216mm
D.
80mm和240mm
查看完整题目与答案
【简答题】Situated in the South West of England, between Exeter and Plymouth, Torquay is one of the most popular holiday resorts in Britain. It provides a variety of entertainment, sports of every kind and cult...
查看完整题目与答案
【简答题】阅读理解。 Most British telephone cards are just plain green, but card collecting is becoming a popular hobby in Britain and collectors even have their own magazine, International Telephone Cards. One reas...
查看完整题目与答案
【多选题】For nonconformity the world whips you with its displeasure. And therefore a man must know how to estimate a sour face. The by-standers look askance on him in the public street or in the friend's parlo...
A.
Walt Whitman
B.
William Faulkner
C.
Ralph W. Emerson
D.
The Road Not Taken
E.
I Shot an Arrow
F.
Self-Reliance
查看完整题目与答案
【单选题】已知一对正确安装的标准渐开线圆柱齿轮传动,其压力角ɑ= 20 o ,模数m=4mm,传动比i12=3,中心距a=144mm。则两齿轮的分度圆直径分别为
A.
18mm和54mm
B.
20mm和60mm
C.
72mm和216mm
D.
80mm和240mm
查看完整题目与答案
【单选题】The black color is _______ this year. [     ]
A.
the most popular
B.
most popular
C.
the popularest
D.
popularest
查看完整题目与答案
【简答题】完形填空 Several years ago, a farmer owned some land along the sea. He advertised(征聘) for workers, but no one wanted to work for him. Most people didn't want to work there 1 they didn't like the bad storm...
查看完整题目与答案
【简答题】B Snow can be very beautiful. When snow covers everything around you , the world looks like a “Winter Wonderland”. That is the name of a very popular song about winter. Richard Smith and Felix Bernard...
查看完整题目与答案
【单选题】已知一对对安装的标准渐开线圆柱齿轮传动,其压力角ɑ= ,模数m=4mm,传动比i12=3,中心距a=144mm。则两齿轮的分度圆直径分别为
A.
18mm和54mm
B.
20mm和60mm
C.
72mm和216mm
D.
80mm和240mm
查看完整题目与答案
相关题目：
【单选题】一圆柱直齿齿轮,模数为4,齿数为18,其齿顶圆直径为( )mm。
A.
72
B.
80
C.
85
D.
90
查看完整题目与答案
【单选题】已知一对正确安装的标准渐开线圆柱齿轮传动,其压力角ɑ= ,模数m=4mm,传动比i12=3,中心距a=144mm。则两齿轮的分度圆直径分别为
A.
18mm和54mm
B.
20mm和60mm
C.
72mm和216mm
D.
80mm和240mm
查看完整题目与答案
【简答题】Situated in the South West of England, between Exeter and Plymouth, Torquay is one of the most popular holiday resorts in Britain. It provides a variety of entertainment, sports of every kind and cult...
查看完整题目与答案
【简答题】阅读理解。 Most British telephone cards are just plain green, but card collecting is becoming a popular hobby in Britain and collectors even have their own magazine, International Telephone Cards. One reas...
查看完整题目与答案
【多选题】For nonconformity the world whips you with its displeasure. And therefore a man must know how to estimate a sour face. The by-standers look askance on him in the public street or in the friend's parlo...
A.
Walt Whitman
B.
William Faulkner
C.
Ralph W. Emerson
D.
The Road Not Taken
E.
I Shot an Arrow
F.
Self-Reliance
查看完整题目与答案
【单选题】已知一对正确安装的标准渐开线圆柱齿轮传动,其压力角ɑ= 20 o ,模数m=4mm,传动比i12=3,中心距a=144mm。则两齿轮的分度圆直径分别为
A.
18mm和54mm
B.
20mm和60mm
C.
72mm和216mm
D.
80mm和240mm
查看完整题目与答案
【单选题】The black color is _______ this year. [     ]
A.
the most popular
B.
most popular
C.
the popularest
D.
popularest
查看完整题目与答案
【简答题】完形填空 Several years ago, a farmer owned some land along the sea. He advertised(征聘) for workers, but no one wanted to work for him. Most people didn't want to work there 1 they didn't like the bad storm...
查看完整题目与答案
【简答题】B Snow can be very beautiful. When snow covers everything around you , the world looks like a “Winter Wonderland”. That is the name of a very popular song about winter. Richard Smith and Felix Bernard...
查看完整题目与答案
【单选题】已知一对对安装的标准渐开线圆柱齿轮传动,其压力角ɑ= ,模数m=4mm,传动比i12=3,中心距a=144mm。则两齿轮的分度圆直径分别为
A.
18mm和54mm
B.
20mm和60mm
C.
72mm和216mm
D.
80mm和240mm
查看完整题目与答案
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