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【单选题】
对相同品种,不同体积密度的材料进行比较时,其体积密度大者,则其( )A.
强度低
B.
比较密实
C.
吸水率大
D.
空隙率大
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参考解析：
知识点：
皮皮学刷刷变学霸
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【单选题】若一个有向图中的顶点不能排成一个拓扑序列，则可断定该有向图( )。
A.
含有多个入度为0的顶点
B.
是一棵树图
C.
含有顶点数目大于1的强连通分量
D.
是一个强连通图
【单选题】根据材料请回答 31～35 Here's a familiar version of the boy-meets-girl situation.A young man has at last plucked up courage to invite.a young lady to dinner.She has accepted his invitation.He is determined to ...
A.
On Fat
B.
We Should All Grow Fat and Be Happy
C.
Many Diseases Are Connected with Fat
D.
Diet Deprives People of Normal Life
【简答题】Michel is a young girl who works for the police as a handwriting expert. She has helped 26 many criminals 27 using her special talents. When she was four, Michel was already so interested in the 2...
【简答题】阅读理解。 Everyone would like to be a millionaire, a person with a lot of money, but can you imagine having over $30 million and only being 20 years old? Britney Spears from Kentwood, a small town in Loui...
【简答题】阅读下面的短文，从每题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项 It is very important to stay healthy. I have a neighbor. She is an old lady. She can do all the housework, 31_ newspapers, watch TV and search on the Internet...
【简答题】Everyone would like to be a millionaire , a person with a lot of money, but can you imagine having over $30 million and only being 20 years old? Britney Spears from Kentwood, a small town in Louisiana...
【简答题】The hotel was in a 31 street and seemed to agree with one who 32 a good sleep after a tiring trip. The woman manager 33 me to my room. When I asked her about dinner, she said it was 34 at six and I ha...
【简答题】Everyone would like to be a millionaire but can you imagine having over S 30 million and only being 20 years old? Britney Spears from Kentwood，a small town in Louisiana，is an international pop superst...
【单选题】若一个有向图中的顶点不能排成一个拓扑序列,则可断定该有向图 。
A.
是个有根有向图
B.
是个强连通图
C.
含有多个入度为0的顶点
D.
含有顶点数目大于1的强连通分量
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