正确答案: B

均匀分布

题目：某生物种群波松分布的方差为V，平均数为m，且V<m则其分布型是（ ）

解析：B

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举一反三的答案和解析：

[单选题]下列各项叙述不符合严重感染的是( )

嗜酸性粒细胞明显增加

[单选题]

industryB． industrial

解析：

 

[单选题]下列关于微循环直捷通路的叙述，错误的是( )

在皮肤中较多见

[单选题]第 23 题 在全人口中，智力呈何种状态分布（　　）

常态分布

[单选题]在下列诗句中，使用了“赋”的表现手法的是( )

总角之宴，言笑晏晏

解析：【答案】C

[单选题]The search engines work by means of _________.

submitting specific search term

解析：细节推理题。从最后一段“They, to not categorize links to web places like web directories do but they allow users to’ search the Internet’ using specific search terms．”(它们不像网页目录那样可以将许多信息分类联系在一起，但是它们允许人们使用特定的搜索术语“在网上查找资料”。)得出选项B(submitting specific search terms使用固定的搜索术语)为正确答案。

[单选题]Did you ever have someone's name on the tip of your tongue and yet you were unable to recall it? (21) this happens again, do not try to recall it. Do something (22) for a couple of minutes, and the name may come into your head. The name is there. Since you have met (23) person and learned his name. It only has to be dug out. The initial effort to recall (24) the mind for operation, but it is the subconscious (25) that go to work to dig up a dim memory. Forcing yourself to recall almost never helps because it doesn't loosen your memory; it only tightens it. Students find the preparatory method helpful (26) examinations. They read over the questions (27) trying to answer any of them. Then they answer first the ones (28) which they are most confident. Meanwhile, deeper mental activities in the subconscious mind are taking (29) ; work is being done on the more difficult question. By the time the easier questions are answered, answers to the more difficult ones will usually begin to (30) into consciousness. It is often just a question of waiting for recall to come to the memory.21.

When

解析：

21．答案为B  根据句意，空格为“当……时”或“如果”。

[单选题]关于右主支气管的描述，下列选项正确的是 （ ）

粗短