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【单选题】
外径为D，内径为d＝0.5D的空心圆轴，两端受扭转力偶矩T作用，轴内的最大切应力为τ。若轴的外径不变，内径改为d1=0.8D，则轴内的最大切应力变为
A.
1.82 τ
B.
1.59 τ
C.
1.35 τ
D.
1.14 τ
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参考答案：
举一反三
【单选题】下列各种化合物中，都属于蛋白质的一组是 [     ]
A.
抗体、胰岛素、血红蛋白
B.
核糖核酸、脱氧核糖核酸
C.
葡萄糖、乳酸、载体
D.
胆固醇、性激素、磷脂
查看完整题目与答案
【单选题】I didn't vote for him. It's not Idislike him. I think mr. Chance is more suitable for the job.
A.
who
B.
that
C.
how
D.
which
查看完整题目与答案
【单选题】听力原文：W: I couldn't get hold of Tom to tell him about the ticket I got for him. His cell phone is always unreachable. Has he changed his phone number? M: I don't think so. But I will see him at the his...
A.
Tom has changed his cell phone number.
B.
The woman's cell phone is always unreachable.
C.
Tom will teach history class at that night.
D.
The man can help the woman give the ticket to Tom.
查看完整题目与答案
【单选题】I didn't vote for him. It's not ________ I dislike him. I think Mr. Chance is more suitable for the jo
A.
who
B.
that
C.
how
D.
which
查看完整题目与答案
【单选题】一家研究机构从IT从业者中随机抽取500人作为样本进行调查,其中60%的人回答他们的月收入在5000元以上。这里的“月收入”是( )
A.
分类变量
B.
顺序变量
C.
离散变量
D.
数值型变量
查看完整题目与答案
【判断题】被保货物全部遭受损失,有实际全损和推定全损之分。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】I didn't vote for him. It's not I dislike him. I think Mr. Chance is more suitbale for this job.
A.
who
B.
that
C.
how
D.
which
查看完整题目与答案
【单选题】I didn't vote for him. It's not i dislike him. I think Mr. Chance is more suitable for the job.
A.
who
B.
that
C.
how
D.
which
查看完整题目与答案
【判断题】税负转嫁的主体是纳税人和负税人。( )
A.
正确
B.
错误
查看完整题目与答案
【多选题】关于税负转嫁的表述正确的是
A.
税负转嫁是和价格的升降直接联系的
B.
税负转嫁有利于国家取得收入
C.
税负转嫁是各经济主体之前税负的再分配
D.
税负转嫁是纳税人的一般行为倾向，是纳税人的主动行为
查看完整题目与答案
相关题目：
【单选题】下列各种化合物中，都属于蛋白质的一组是 [     ]
A.
抗体、胰岛素、血红蛋白
B.
核糖核酸、脱氧核糖核酸
C.
葡萄糖、乳酸、载体
D.
胆固醇、性激素、磷脂
查看完整题目与答案
【单选题】I didn't vote for him. It's not Idislike him. I think mr. Chance is more suitable for the job.
A.
who
B.
that
C.
how
D.
which
查看完整题目与答案
【单选题】听力原文：W: I couldn't get hold of Tom to tell him about the ticket I got for him. His cell phone is always unreachable. Has he changed his phone number? M: I don't think so. But I will see him at the his...
A.
Tom has changed his cell phone number.
B.
The woman's cell phone is always unreachable.
C.
Tom will teach history class at that night.
D.
The man can help the woman give the ticket to Tom.
查看完整题目与答案
【单选题】I didn't vote for him. It's not ________ I dislike him. I think Mr. Chance is more suitable for the jo
A.
who
B.
that
C.
how
D.
which
查看完整题目与答案
【单选题】一家研究机构从IT从业者中随机抽取500人作为样本进行调查,其中60%的人回答他们的月收入在5000元以上。这里的“月收入”是( )
A.
分类变量
B.
顺序变量
C.
离散变量
D.
数值型变量
查看完整题目与答案
【判断题】被保货物全部遭受损失,有实际全损和推定全损之分。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】I didn't vote for him. It's not I dislike him. I think Mr. Chance is more suitbale for this job.
A.
who
B.
that
C.
how
D.
which
查看完整题目与答案
【单选题】I didn't vote for him. It's not i dislike him. I think Mr. Chance is more suitable for the job.
A.
who
B.
that
C.
how
D.
which
查看完整题目与答案
【判断题】税负转嫁的主体是纳税人和负税人。( )
A.
正确
B.
错误
查看完整题目与答案
【多选题】关于税负转嫁的表述正确的是
A.
税负转嫁是和价格的升降直接联系的
B.
税负转嫁有利于国家取得收入
C.
税负转嫁是各经济主体之前税负的再分配
D.
税负转嫁是纳税人的一般行为倾向，是纳税人的主动行为
查看完整题目与答案
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