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【单选题】
对于连接用螺纹,主要要求连接可靠,自锁性能好,故常选用( )
A.
螺纹升角小,单线普通三角螺纹
B.
螺纹升角大,普通三角螺纹
C.
螺纹升角小,单线梯形螺纹
D.
螺纹升角大,矩形螺纹
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参考答案:
举一反三
【单选题】组成挥发油最主要的成分是
A.
四萜
B.
三萜
C.
二萜类
D.
单萜、倍半萜
E.
二倍半萜类
【单选题】(Had the author) (see) that his novel (would) cause such a commotion, he (would not) have written it.
A.
Had the author
B.
see
C.
would
D.
would not
【单选题】组成挥发油最主要的成分是
A.
脂肪族化合物
B.
芳香族化合物
C.
二萜类
D.
二倍半萜类
E.
单萜、倍半萜及其含氧衍生物
【单选题】关于删除工作表的叙述错误的是 ______ 。
A.
误删了工作表可单击“快速访问工具栏”的“撤消”按钮 撤消删除操作
B.
右击当前工作表标签,从快捷菜单中选“删除”命令可删除当前工作表
C.
执行“开始”功能区中的“删除”下拉列表中的“删除工作表”命令 可删除当前工作表
D.
工作表的删除是永久性删除,不可恢复
【单选题】The author would probably agree that in modem conflicts ______.
A.
everyone would become a victim
B.
more non-combatants would escape harm
C.
combatants are not responsible for their actions
D.
nuclear weapons are more 'humane'
【单选题】With which bf the following statements would the author agree?
A.
One would not ordinarily suppose that a large country would be poor.
B.
A negative sign on population density may be a wrong sign.
C.
Per capita income depends on the size of the labor force.
D.
The author would agree with all of the above statements.
【单选题】--- Would you mind if I turn on the radio and listen to some music? --- ________. In fact, I also like to listen to music in my car.
A.
No, go ahead
B.
Yes, I would
C.
No, you can’t
D.
Yes, no problem
【简答题】The author would agree that
【简答题】With what opinion would the author be most likely to agree?
【单选题】组成挥发油最主要的成分是
A.
四萜类化合物
B.
三萜类化合物
C.
二萜类
D.
二倍半萜类
E.
单萜、倍半萜及其含氧衍生物
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