低钾血症心电图的改变有(  )低钾血症心电图的改变有(  )

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低钾血症心电图的改变有(  )

(1)【◆题库问题◆】:[多选] 低钾血症心电图的改变有(  )
A.ST段上抬
B.T波降低、变平或倒置
C.QRS波增宽
D.Q-T间期延长
E.“U”波增高

【◆参考答案◆】:B,D,E

【◆答案解析◆】:略

(2)【◆题库问题◆】:[单选] 下列关于臂丛的叙述,正确的是(  )
A.臂丛与锁骨下动脉一起通过斜角肌间隙
B.臂丛与锁骨下静脉一起通过斜角肌间隙
C.臂丛与锁骨下动、静脉一起通过斜角肌间隙
D.臂丛麻醉只可在腋窝处进行
E.以上都不正确

【◆参考答案◆】:A

【◆答案解析◆】:略

(3)【◆题库问题◆】:[单选] 揭示事物发展的趋势和道路的规律是(  )
A.对立统一规律
B.质量互变规律
C.否定之否定规律
D.联系和发展规律

【◆参考答案◆】:C

(4)【◆题库问题◆】:[单选] 三个数0,30.7,log30.7的大小关系是(  ) (A)0<30.7<log30.7(B)log30.7<0<30.7(C)log30.7<30.7<0(D)0< log30.7<30.7

【◆参考答案◆】:B

(5)【◆题库问题◆】:[单选] 轻度缺钠,下列哪项是错误的(  )
A.尿中氯化钠常在正常范围
B.每公斤体重估计缺氯化钠0.5g
C.血清钠离子浓度为130~135mmol/L
D.红细胞计数和血红蛋白均增高
E.口渴不明显

【◆参考答案◆】:A

(6)【◆题库问题◆】:[单选] 函数y-=ƒ(x)满足ƒ(1)=2ƒ″(1)=0,且当x<1时,ƒ″(x)<0;当x>1时,ƒ″(x)>0,则有(  ).
A.x=1是驻点
B.x=1是极值点
C.x=1是拐点
D.点(1,2)是拐点

【◆参考答案◆】:D

【◆答案解析◆】:利用拐点的定义来确定选项.需注意的是:拐点是曲线上的点,应该是(1,2),而不是x0=1.

(7)【◆题库问题◆】:[单选]唯物辩证法的总特征是
A.物质决定意识的观点
B.联系和发展的观点
C.实践第一的观点
D.对立统一的观点

【◆参考答案◆】:B

(8)【◆题库问题◆】:[单选] 下列关于消化道神经支配的叙述,错误的是(  )
A.整个消化道都受交感神经和副交感神经双重支配
B.副交感神经的作用是主要的
C.支配消化道的副交感神经主要来自迷走神经
D.大部分副交感神经节后纤维释放ACh递质
E.交感神经节后纤维大部分释放NE递质

【◆参考答案◆】:A

【◆答案解析◆】:略

(9)【◆题库问题◆】:[单选,材料题] Who are the first to make the successof sit-in become true?回答下面的题目American Blacks experienced a revolutionafter 1945, a revolution in expectations.Following World War Ⅱ , the steady movement toward first-classcitizenship for Black people quickened, with significantactions taking place in courts of law, in voting booths, in restaurants and inthe streets of the nation.A decade of intense civil rights activity was launched in 1954 when theUnited States Supreme Court declared segregated schools to beunconstitutional. In 1955, Dr. Martin Luther King, Jr. , effectivelyorganized the Blacks of Atlanta, Georgia, in a bus boycott. The boycott lastedtwo years, and when it was over, Blacks no longer were degraded by being forcedto sit or stand in the rear of buses.In 1960, a group of Black college students decided that they, as well aswhite persons, had the right to eat at a lunch counter in Greensboro, NorthCarolinA. This sit-in sparked anaggressive national movement and, in the next few years, thousands of young menand women--Black and White, North and South--overturned local laws and customsthat had maintained segregation. Sit-ins, pray-ins, freedom rides, freedommarches and demonstrations to open all schools to Black children took placeacross the nation.Several important actions took place tochange the status of black people
A.Black college students and whites.
B.First-class citizens.
C.The Blacks of AtlantA.
D.Young men and women in Greensboro.

【◆参考答案◆】:A

【◆答案解析◆】:第三段。一群黑人大学生和白人大学生认为黑人与白人一样有权利在餐厅内吃饭。选项A是正确的。

(10)【◆题库问题◆】:[单选] 下列各句,没有语病、句意明确的一句是 ()
A.在香山一带老百姓的传说里,一代文豪曹雪芹的足迹走遍了这里的沟沟壑壑。
B.有些作家背离了大众欣赏的习惯,弄些菲驴非马的东西,却自诩是在搞探索和实验。
C.这次活动的宗旨是展现京剧艺术形成、发展的历史过程,并以此推动弘扬民族文化优秀传统和建设社会主义精神文明。
D.我们兄弟手足情深,我怎能丢下残疾的哥哥和弟弟去观看精彩的演出呢?

【◆参考答案◆】:B

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