对于1.204×1024个H2,下列说法不正确的是[ ] A.它可与1molO2

题型:选择题

问题:

对于1.204×1024个H2,下列说法不正确的是[ ]

A.它可与1 mol O2完全反应(点燃)

B.它是4 mol H

C.它与16 g CH4所含的H的数目相同

D.它与2NA个H2SO4所含的H的数目相同

考点:物质的量
题型:选择题

“a=2”是“直线ax+2y=0平行于直线x+y=1”的     [     ]

A.充分而不必要条件

B.必要而不充分条件 

C.充分必要条件

D.既不充分也不必要条件

题型:选择题

铁道部E2000]152号规定,学生票限定在寒假()期间发售。

A.1月1日至3月31日

B.11月1日至3月31日

C.12月1日至3月31日

D.12月1日至3月1日

题型:选择题

短文填词(共10小题,每小题1分,满分10分)

Changbaishan stands in Jilin Province, northeast China. It is famous for its thick forest, China’s largest _____小题1:________ (自然) reserve, whichis ______小题2:_______ to wildlife. Every year, Changbaishan attracts touristsfrom all over the world to enjoy v_______小题3:________ of unique rare plantsand animals. Besides, visitors to Changbaishan are also rewarded ___小题4:____the beautiful s_____小题5:_____ of Tianchi, once the crater of a volcano. However,______ 小题6:_______ is no need to worry about the volcano, for it is a dead one.

The winter here is f___________小题7:_____ cold. The most interesting thing aboutTianchi is a beautiful story c_______小题8:_____ the father of the Manchu people,who is said to have been born by a young woman from heaven ___小题9:____ (沐浴)in the deep lake. The story is told to convey the message __小题10:____ the Manchupeople are clever.

题型:选择题
一根铁丝长2米,用去80厘米,用去
()
()
.还剩下______.
题型:选择题

电烧伤的并发症包括

A.继发性出血
B.急性肾功能衰竭
C.白内障
D.厌氧菌感染
E.以上都是

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