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【单选题】
设给定权值的叶子总数有n 个,其哈夫曼树的结点总数为( )。A.
不确定
B.
2n
C.
2n+1
D.
2n-1
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反馈参考答案：
举一反三
【单选题】下列有关胃粘膜细胞的描述哪项是错误的:( )
A.
壁细胞只分泌盐酸
B.
贲门腺和幽门腺细胞分泌粘液
C.
主细胞分泌胃蛋白酶原
D.
肥大样细胞分泌组织胺
E.
D细胞分泌生长抑素
【单选题】Although Mr. Green's style. is more approachable than his predecessor's, close observers reckon his ______is just as strong.
A.
textile
B.
substance
C.
material
D.
particle
【简答题】方式用来在系统键盘上输入一段程序,然后按下循环启动键来执行该段程序。
【单选题】Mr. Green _____ for more than ten years.
A.
died
B.
has died
C.
is dying
D.
has been dead
【单选题】—How long have Mr. and Mrs. Green ______? —For more than thirty years. [ ]
A.
married
B.
had married
C.
marry
D.
been married
【简答题】The following is a business letter. Dear Mr. Green, As your name and address were listed in The Business, we are writing to you with a desire to open an account with you. We are one of the leading exp...
【单选题】Rather than ____his car on the busy road, Mr. Green always prefers____ his bike.
A.
drive; to ride
B.
driving; ride
C.
to drive; riding
D.
to drive; ride
【简答题】Dear Mr. Green, From the March 4 issue of the International Business Daily we have learned that you are in the market for chinaware, which just falls within our business scope. We are now writing to y...
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