压力铸造的两大特点是（）。A.高温高压 B.高压高速 C.高温高速_爱下问搜题

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问题单项选择题

压力铸造的两大特点是（）。

A.高温高压

B.高压高速

C.高温高速

D.低温高压

答案

参考答案：B

填空题

将正确的选项填入空白处。

A. jobs B. about C. to come D. works E. better F. lives G. cousins H. to get I. from

     Sandra is twenty years old. She comes from Wuhan, a city in China. She 1______ with her aunt and uncle
and three cousins in Manhattan (曼哈顿), a part of New York. Her parents and two brothers still live in Wuhan. Her brothers want 2______ to the United States, but her parents are going to stay in Wuhan.
     Sandra works in a small shop on Broadway(百老汇大街). One of her 3______ owns (拥有) the shop.
She 4______ six days a week 5______ ten in the morning to eight at night. The job isn't hard, but the hours
are long and the pay (薪水) is low. Sandra wants to get a 6______ job, but she doesn't know any English. If
one doesn't know English, it's too difficult 7______a good job.
    Life in New York city isn't easy for Sandra. The weather is cold, the Americans seem cold, and sometimes
her room is cold. When she comes home from work, she thinks 8______ her parents, brothers, and friends in
Wuhan. Sometimes she cries a lot. She dreams of going back, but she can't. In Wuhan the weather is warm
and the people are 9______, but there are no 10______ there for Sandra.

填空题

对于长度为n的有序线性表，在最坏情况下，二分查找需要比较log₂n，那么顺序查找需要比较的次数是【2】。