离子色谱分析样品时,样品中离子价数越高,保留时间(),离子半径越大,保留时间()。

题型:填空题

问题:

离子色谱分析样品时,样品中离子价数越高,保留时间(),离子半径越大,保留时间()。

考点:环境监测上岗考试离子色谱法离子色谱法题库
题型:填空题

根据短文内容判断正误,正确的在括号里填A, 错误的在括号里填B。

A man has a parrot (鹦鹉). It’s blue and green. It can speak like a man. Every morning, the man wants to talk with it. But the parrot never says any words to him. One morning, the man says something to the parrot, but the parrot doesn’t say anything. The man is angry (生气) with it. He doesn’t give it any food or water. The next morning, the man goes and sees the parrot. He says something to it. But the parrot still (仍然) doesn’t speak. At last , the man says , “ Fool (笨蛋)!You are a fool.” After that he hears the same words from the parrot. Then he loves it very much. It’s a clever parrot.

小题1:The parrot is white and blue. 

小题2:The parrot talks to the man every day.  

小题3:The man doesn’t give the parrot food or water when it doesn’t speak.

小题4:The parrot is really a fool.  

小题5:At last, the parrot says the same words as the man says.

题型:填空题

关于叶片结构的叙述,正确的是( )

A.叶肉细胞中含有叶绿体,能进行光合作用

B.叶片又叶肉、叶柄、叶脉组成

C.叶片表皮上有气孔,白天全部开放,夜晚全部关闭

D.叶片表皮属于营养组织

题型:填空题

黄水疮命名的依据是(  )

A.部位

B.症状

C.形态

D.疾病特征

E.范围大小

题型:填空题

男性,61岁。上腹隐痛,乏力伴食欲减退,间断解黑便半年余,体重下降约11kg。今日突然呕吐暗红色血液,量约200ml。查体:上腹部饱满,轻压痛,肝脾未触及,移动性浊音(-)。

最具有诊断价值的检查是()

A.胃镜

B.血管造影

C.腹部B超

D.胃肠道造影

E.腹部CT

题型:填空题

男性,52岁,因腹胀不适2个月伴低热来院门诊。查体:神清,一般状态尚可,巩膜轻度黄染,肝肋下未及,脾肋下2指。肝功能A/C1.25,白蛋白30g/L。追问病史,10年前曾患乙肝,病史中无呕血、黑便史。GI示食管胃底静脉曲张,B超示腹水(+)。

治疗中哪项不适用()

A.制酸

B.保肝

C.软食

D.手术预防出血

E.利尿剂

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