给出下面代码： a = input（"").split（",") if isinstance（a,list): print（"{} is list".format（a)

更多“给出下面代码： a = input（"").split（",…”相关的问题

第1题

阅读下面SQL代码片段： DECLARE val; IF val IS NULL THEN SELECT 'val is NULL'; ELSE SELECT 'val is not NULL'; END IF; 下面选项中，关于运行结果的描述，正确的是()。

A、输出val is NULL

B、输出val is not NULL

C、语法错误

D、运行时出现异常

点击查看答案

第2题

The asset portfolio of commercial banks is______.

A．split evenly between demand deposits and time deposits

B．highly diversified

C．concentrated in corporate bonds

D．concentrated in corporate stock

点击查看答案

第3题

Speaker A: Do you mind if I keep pets in this building? Speaker B: ______

A．I would rather you didn"t.

B．Who knows?

C．Yeah, I love pets.

D．No, you can"t.

点击查看答案

第4题

A．IS09000-3

B．IS09004-4

C．IS09001

D．IS08402

点击查看答案

第5题

If IP address is 202.130.191.33 and subnet mask is 255.255.255.0, then subnet prefix is () .

A.202.130.0.0

B.202.0.0.0

C.202.130.191.33

D.202.130.191.0

点击查看答案

第6题

语句Print "The answer is:";20／4－2的结果为( )。A、The answer is 20／4－2B、The answe

语句Print "The answer is:";20/4-2的结果为( )。

A、The answer is 20/4-2

B、The answer is 3

C、The answer is "20/4-2"

D、非法语句

点击查看答案

第7题

Suboptimal decision making is not likely to occur when 在下列哪一种情况下，作出次优决策的事很可能不会出现？

A.there is little congruence among the overall organization goals, the subunit goals, and the individual goals of decision makers.组织的总体目标、子单位目标以及决策制定者个人的目标之间，缺乏一致性

B.goals and standards of performance are set by the top-management.目标和业绩考核标准均由最高管理当局制定

C.guidance is given to subunit managers about how standards and goals affect them.关于考核标准和组织目标对子单位有何影响的的指导性意见，都要提交给各子单位的经理人员

D.the subunits in the organization compete with each other for the same input factors or for the same customers.一个组织的各子单位之间，就同样的投入要素或者同样的客户群体进行竞争

点击查看答案

第8题

We can learn from the first paragraph that______.

A．Mauna Loa Observatory is located in northern Canada

B．about 4 million years ago, jungles covered northern part of the Earth

C．the carbon-dioxide concentration is expected to exceed 400 ppm in the next few days

D．it is the first time in human history that carbon-dioxide concentration reaches 400 ppm

点击查看答案

第9题

Isn’t it surprising that scientists have a better understanding of how many stars there are in the galaxy than how many species there are on Earth? Their estimates of global species diversity vary from 2 to 100 million species. Most people agree on an estimate of somewhere near 10 million and yet only 1.75 million have actually been named. Current knowledge of species diversity is limited. This problem becomes more serious because there is a lack of a central database or list of the world’s species.

New species are still being discovered — even new birds and mammals(哺乳动物). On average, about three new species of birds are found each year, and since 1990, 10 new species of monkeys have been discovered. Other groups are still far from being completely described: an estimated 40 percent of freshwater fishes in South America have not yet been classified.

Scientists were startled in 1980 by the discovery of a huge diversity of insects in tropical forests. In one study of just 19 trees in Panama, 960 new species of beetles were discovered.

As scientists begin investigating other little-known ecosystem, like the soil and the deep sea, “surprising” discoveries of species become commonplace. There is nothing strange about this, though, since as many as a million undescribed species are believed to live in the deep sea. And one gram of a small-sized piece of land might hold 90 million bacteria(菌类) and other microbes(微生物). How many species these communities contain is still anyone’s guess.

16. Which of the following is true?

A) Scientists have a sound knowledge about the diversity of species

B) Scientists don’t know much about the number of stars in the galaxy

C) Scientists show more interest in stars in the galaxy than in species on Earth

D) Scientists don’t agree on the number of species in the world

17. How many species are there on Earth according to most scientists?

A) About 2 million

B) About 10 million

C) About 100 million

D) About 1.75 million

18. In which of the following groups is the discovery of new species not mentioned in

the passage？

A) Birds

B) Monkeys

C) Trees

D) Freshwater fish

19. What can you learn from the passage?

A) The soil and the deep sea belong to communities that haven’t been fully explored

B) It is surprising news wherever new species are discovered in the deep sea

C) About 90 million species are believed to live in the deep sea

D) A million species in the deep sea have been discovered and named

20. Which of the following best reveals the main idea of the passage?

A) Surprising discoveries of new species are commonplace

B) The mystery of the deep sea and the soil remains to be uncovered

C) Knowledge of global species diversity is still limited

D) Estimates of global species diversity vary among scientists

点击查看答案

给出下面代码： a = input（"").split（",") if isinstance（a,list): print（"{} is list".format（a)) else: print（"{} is not list".format（a)) 代码执行时，从键盘获得1,2,3，则代码的输出结果是： ______。