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【简答题】
已知轴径 d=20mm,轴上安装的齿轮宽度B=46mm,请选一普通A,并标记。 附表 普通平键、导向平键和键槽的截面尺寸及公差 轴 键 键 槽 直径 d b (h9) h (h11) L (h14) 宽 度 b 深 度 半径 r 极 限 偏 差 轴 t 毂 t 1 较联接 一般键联接 较紧键联接 轴H9 毂D10 轴N9 毂Js9 轴和毂P9 尺寸 极限偏差 尺寸 极限偏差 最小 最大 >10~12 4 4 8~45 +0.030 0 +0.078 +0.030 0 -0.036 ±0.015 -0.012 -0.042 2.5 +0.1 0 1.8 +0.1 0 0.08 0.16 >12~17 5 5 10~56 3.0 2.3 0.16 0.25 >17~22 6 6 14~70 3.5 2.8 >22~30 8 7 18~90 +0.036 0 +0.098 +0.040 0 -0.036 ±0.018 -0.015 -0.051 4.0 +0.2 0 3.3 +0.2 0 >30~38 10 8 22~110 5.0 3.3 0.25 0.40 >38~44 12 8 28~140 +0.043 0 +0.120 +0.050 0 -0.043 ±0.0215 -0.018 -0.061 5.0 3.3 >44~50 14 9 36~160 5.5 3.8 >50~58 16 10 45~180 6.0 4.3 >58~65 18 11 50~200 7.0 4.4 >65~75 20 12 56~220 +0.052 0 +0.149 +0.065 0 -0.052 ±0.026 -0.022 -0.074 7.5 4.9 0.40 0.60 >75~85 22 14 63~250 9.0 5.4 >85~95 25 14 70~280 9.0 5.4 >95~110 28 16 80~320 10.0 6.4
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参考答案：
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【简答题】Complete the following sentences with an appropriate word or phrase. 1) Young as she is, Mary is very good at h_____ difficult customers. 2) After explaining his plan in great detail, Bob s_____ its m...
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【简答题】This study, conducted by Dr. Mary Joe Bane, yzes 1 and 2 about the American family. Dr. Bane expected to prove that the American family was 3 and needed to 4 . But instead, sh...
查看完整题目与答案
【单选题】MRP系统的主要输出是（ ）。
A.
供货计划
B.
BOM
C.
采购计划和加工计划
D.
主生产计划
查看完整题目与答案
【判断题】食用菌生产中用在拌料时加石灰，加入的石灰是熟石灰。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The hotel charges $20 a day, exclusiv _______ meals.
A.
in
B.
for
C.
on
D.
of
查看完整题目与答案
【判断题】MRP系统的主要信息是企业的主生产计划，以及与材料物资相关的存货记录和产品、部件用料清单，输出信息即为物资需求计划。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Complete the following sentences with an appropriate word or phrase. 1) Young as she is, Mary is very good at h_____ difficult customers. 2) After explaining his plan in great detail, Bob s_____ its m...
查看完整题目与答案
【单选题】Ms Harris's conclusion would be more convincing if ________.
A.
she had based study exclusively on twins
B.
she had attacked tile developmentalists more harshly
C.
she had truly understood the developmentalists’views
D.
she has provided evidence pointing to developmental characteristics
查看完整题目与答案
【单选题】MRP系统的主要输出是（ ）。
A.
主生产计划
B.
BOM
C.
采购计划和加工计划
D.
供货计划
查看完整题目与答案
【单选题】Put the following sentences into right orders to make a complete story. 1. David, unconvinced, discovers that Margot has been using a livesteaming site called YouCast and that she frequently spoke to ...
A.
2-1-4-3-5
B.
2-3-1-4-5
C.
2-3-4-1-5
查看完整题目与答案
相关题目：
【简答题】Complete the following sentences with an appropriate word or phrase. 1) Young as she is, Mary is very good at h_____ difficult customers. 2) After explaining his plan in great detail, Bob s_____ its m...
查看完整题目与答案
【简答题】This study, conducted by Dr. Mary Joe Bane, yzes 1 and 2 about the American family. Dr. Bane expected to prove that the American family was 3 and needed to 4 . But instead, sh...
查看完整题目与答案
【单选题】MRP系统的主要输出是（ ）。
A.
供货计划
B.
BOM
C.
采购计划和加工计划
D.
主生产计划
查看完整题目与答案
【判断题】食用菌生产中用在拌料时加石灰，加入的石灰是熟石灰。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The hotel charges $20 a day, exclusiv _______ meals.
A.
in
B.
for
C.
on
D.
of
查看完整题目与答案
【判断题】MRP系统的主要信息是企业的主生产计划，以及与材料物资相关的存货记录和产品、部件用料清单，输出信息即为物资需求计划。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Complete the following sentences with an appropriate word or phrase. 1) Young as she is, Mary is very good at h_____ difficult customers. 2) After explaining his plan in great detail, Bob s_____ its m...
查看完整题目与答案
【单选题】Ms Harris's conclusion would be more convincing if ________.
A.
she had based study exclusively on twins
B.
she had attacked tile developmentalists more harshly
C.
she had truly understood the developmentalists’views
D.
she has provided evidence pointing to developmental characteristics
查看完整题目与答案
【单选题】MRP系统的主要输出是（ ）。
A.
主生产计划
B.
BOM
C.
采购计划和加工计划
D.
供货计划
查看完整题目与答案
【单选题】Put the following sentences into right orders to make a complete story. 1. David, unconvinced, discovers that Margot has been using a livesteaming site called YouCast and that she frequently spoke to ...
A.
2-1-4-3-5
B.
2-3-1-4-5
C.
2-3-4-1-5
查看完整题目与答案
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