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【单选题】
比较离心泵机械密封和填料密封的耐久性( )A.
填料密封的耐久性好一些
B.
机械密封的耐久性好一些
C.
两种轴封耐久性相差不大
D.
不好说
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【简答题】绝经后骨质疏松（I型）属于（ ）？
【单选题】以下两句话都含有下划线单词是( ) (1)There is a book on the desk.桌子上面有本书。 (2)There is a boy in the picture.图片里有一个男孩。
A.
可数名词单数
B.
可数名词复数
C.
不可数名词
【单选题】妇女绝经后与老年性骨质疏松症的主要区别正确的是( )
A.
I型比I型骨丢失速率慢
B.
1型与II型患病年龄没有区别
C.
I型与II型都丢失小梁骨
D.
I型与II型都属于继发性
E.
I型为女性,II型为男性
【单选题】The primary factor accounting for Michell's directing Notting Hill is that
A.
he was once an assistant at the Royal Court Theatre.
B.
The Buddha of Suburbia he took charge of interested many people.
C.
he has done a good job in the dramatisation of Austin's Persuasion.
D.
the film My Night With Reg he directed was a great success.
【简答题】On 'TV Magazine' tonight they are looking at people who have given up regular jobs and high salaries to start a new way of life, people who decided to leave the ___1____. Daniel and Michelle's marri...
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