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【简答题】
根据公路在政治、经济和国防上的重要意义和使用性质,可划分为:国道、 、 、 和专用公路。
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参考答案:
举一反三
【简答题】按两构件之间相对运动特征的不同,低副可分为 、 和 。
【单选题】圆锥形状公差包括
A.
素线直线度公差
B.
圆度公差
C.
素线直线度公差和圆度公差
D.
角度公差
【简答题】Most of us feel upset if we miss just one meal, and if we tried to go without food for l2 hours we would really be uncomfortable. But there are some people who seem able to "fast" for very long peri...
【单选题】形状公差包括()
A.
平面度
B.
垂直度
C.
全跳动
D.
对称度
【简答题】In some cases, they feel they have no choice, either because there are not enough suitable permanent jobs to apply for or because the competition for those jobs is too fierce.
【单选题】Libraries develop with times. They have changed greatly since decades ago. ___4___ Some libraries have apps so you can see when your books are due back and even reserve books in some cases. There are ...
A.
Libraries help people learn.
B.
Libraries help educate the kids.
C.
They create a great sense of community.
D.
You can go in, settle down and read a book without being charged a penny.
E.
Most libraries now have computers and allow people to borrow CDs and DVDs.
F.
Libraries help us save money as we’re borrowing books rather than buying them.
G.
For others, particularly the homeless and people in poverty, a lifeline to the world.
【多选题】形状公差包括( )
A.
直线度
B.
圆度
C.
圆柱度
D.
同轴度
【判断题】自花授粉的四倍体植物比自花授粉的二倍体植物子代隐性表型的频率高。
A.
正确
B.
错误
【多选题】形状公差包括 、 、
A.
直线度
B.
平面度
C.
平行度
D.
圆度
【单选题】Analyze the following statement, and then choose one of the options that you think is best to use in academic writing:“As I've said many times … the data are really just at best suggestive. There have...
A.
Most credible evidence presently available suggests that this drug fails to assist patients suffering from coronavirus infection
B.
Maybe it works, maybe it doesn’t.
C.
Only heaven knows whether it works.
D.
It only works (sometimes) if you believe in it.
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