用NA表示阿伏加德罗常数,下列叙述正确的是( ) A.通常状况下,0.2NA个N

题型:选择题

问题:

用NA表示阿伏加德罗常数,下列叙述正确的是(  )

A.通常状况下,0.2NA个NH3的质量为3.4g

B.标准状况下,22.4LO3含有2NA个原子

C.7.1gC12变为氯离子时,得到的电子数一定为0.1NA

D.1L0.2mol/L的硫酸铁溶液中含有的SO42-离子数目为0.2NA

考点:阿伏加德罗常数
题型:选择题
阅读下面短文,根据所读内容在表格中的空白处填入恰当的单词。注意:每个空格只填一个单词。
Dennis Hopper, who was described as "Easy Rider's" biker Billy and "Blue Velvet's", died of cancer Saturday morning at his home in Venice, California.He was 74.
Hopper, who was diagnosed with cancer last October, was surrounded by his children and wife when he died.The American film star made his last public appearance on March 26, 2010, when his star was addressed on Hollywood's Walk of Fame.
Dennis Hopper was born in Dodge City, Kansas, on May 17, 1936.He grew up in San Diego, California, and got an early reputation for stage work.Making his way to Hollywood while still in his teens, he quickly earned roles in several films and TV shows, including "Rebel Without a Cause" (1955), in which he met James Dean, who became a friend and life-long model.
Hopper maintained a somewhat not smooth career through the mid-60s.But it was 1967s."The Trip", directed by "King of the B's" Roger Corman, that made the actor popular with audience and two of his "Easy Rider" colleagues, actor Peter Fonda and "The Trip" writer Jack Nicholson.
In early 1968, Hopper led the group through his own low-budget film, a biker road movie about two riders who travel from Los Angeles to New Orleans."Easy Rider" was finally released in the summer of 1969, and was very popular after 1967's "Bonnie and Clyde" and "The Graduate", the breakthrough that set free the baby boomer generation on Hollywood.
The film, made on the fly by Hopper and co-star Fonda for less than $ 500,000, became one of the most popular movies of its time.
Among his recent roles were a villain (反面人物) in the TV series "24" and an officer in the short-lived TV show "E-Ring".He was starring in the TV version of the Oscar-winning film "Crash" at his death, playing a record producer.He was named a chevalier (功勋人物) of France's Order of Arts and Letters in 2008.
Title
Easy Rider's actor 小题1:_____
The小题2:____ of his death
●He died of cancer.
Age
●He was 74.
The 小题3:____ of birth
●He was born on May 17, 1936.
The 小题4:____ of his career
●He became 小题5:___ in his teens.
●He began to play roles in many films.
●His career was not 小题6: ____ in the mid-60s.
●1967's "The Trip", 小题7:_______ his popularity again.
●He made a major 小题8:_______ in his career because of "Easy Rider".
●He played a record 小题9:______ in the TV version "Crash".
小题10:___
●He was named a chevalier of France's Order of Arts and letters in 2008.
题型:选择题

已知某挖土机挖土的一次正常循环工作时间是2min,每循环工作一次挖土0.5m3,工作班的延续时间为8h,机械正常利用系数为0.8,则其产量定额为()m3/台班。

A.96

B.120

C.150

D.300

题型:选择题

不属于描述性流行病学特征的是

A.属观察性研究
B.不需设立对照组
C.不能分析因果联系
D.必须设立对照组
E.可以得到时点患病率

题型:选择题

题39图所示系统的表达式为()。

A.A

B.B

C.C

D.D

题型:选择题

男性,56岁,进行性贫血1年,剧烈腰痛3个月,查体:血红蛋白89g/L,白细胞3.4×109/L,血小板68×109/L,ESR18cm/h,尿蛋白(++),骨髓异常浆细胞0.54,血清蛋白电泳出现M蛋白。

与诊断不符的血液学改变是()

A.无幼粒、幼红细胞

B.血沉显著增快

C.血片中见红细胞排成钱串状

D.浆细胞增多

E.全血细胞减少

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