(2013辽宁沈阳)如图是某同学鉴别碳酸氢铵、硫酸铵、硝酸铵三种化肥的过程(反应

题型:推断题

问题:

(2013辽宁沈阳)如图是某同学鉴别碳酸氢铵、硫酸铵、硝酸铵三种化肥的过程(反应条件未标出),请回答下列问题:

(1)步骤①中通过观察到          现象,可以鉴别出碳酸氢铵。

(2)步骤②中所需试剂可以选用两种不同类别(按酸、碱、盐、氧化物进行分类)的物质,其化学式分别为                                       

请写出硫酸铵分别与这两种试剂发生反应的化学方程式:                                  

考点:水(蒸气)的检验粗盐的提纯空气的检验物质的相互转化和制备
题型:推断题

在括号里填上最大的数.

2×______<2如&nnsp;&nnsp;

u×______<下下

______×h<61

______×8<2u.

题型:推断题

下面 是各位专家的有关信息,请阅读六位不同的人的需求(A---F),并按照需求匹配信息。选项中有一项是多余选项。

小题1:Doctor Allen

Doctor Allen is a dentist.The dentist is a doctor who is specially trained to care for teeth.When you visit your dentist for a checkup, he or she will look at your teeth and gums to check for any problem.The dentist also wants to make sure your teeth are developing properly as you grow.It’s important to visit your dentist every 6 months to make sure you’re taking good care of your teeth and that your teeth and gums are healthy.

小题2:Doctor Philips

Doctor Philips is a pediatrician.Basically, pediatricians focus on the physical, emotional, and social health of infants, children, adolescents, and young adults from birth to 21 years.Their patient-care lens is focused on prevention, detection, and management of physical, behavioral, developmental, and social problems that affect children.Even more basically, pediatricians take care of children.This might involve treating an ear infection, talking to parents about school or behavioral problems, or seeing them for well child checkups and giving them their shots.

小题3:Doctor Smith

Doctor Smith is a surgeon, who is a physician specializing in surgery.General Surgeons perform comprehensive general surgery examinations, consultation, diagnosis, and treatment planning, which includes: trauma, wounds, and conditions of soft tissue, including aspiration,

biopsy, and repair, etc.

小题4:Doctor Steward

Doctor Steward is a clinical psychologist, who is trained and educated to perform psychological research, testing, and therapy.Clinical psychologists may simply, but importantly, provide an opportunity to talk and think about things that are confusing and worrying.They would also discuss with you different ways of understanding or interpreting your problems or situations.Clinical psychologists are trained to use a range of different approaches aimed to help you become more expert about yourself, and more able to overcome or cope with life problems.

小题5:Doctor Lisa

Doctor Lisa is an excellent school consultant.Educational consultants counsel students and their families in the selection of programs, schools and treatment centers, based on the student’s individual needs.When students graduate from high school, some of them want to continue their study; they may be not sure which university is more appropriate for them, or what subject they will choose.In that case, most of them will turn to their educational consultants.

请阅读以下相关信息,然后匹配他/她拟要咨询的相关专家或医生。

A.Tom’s mother is worried because Tom’s wounded this morning when he jumped off the speeding bicycle.The soft tissue of his right leg was broken.

B.Alex is going to take a course of computer.But he is not sure whether this course will be useful when he goes to the university.

C.Mummy is unhappy because she feels painful when she bites into something cold or hot.Her teeth are really a trouble to her.

D.Mary’s younger brother Tim, who is 8 years old, felt uncomfortable, because he had eaten too much ice-cream.E. Lily wants to visit some places of interests during the long holiday.But she doesn’t know where to go and how to have a good tour and not waste money.

F. Lee is really frustrated nowadays.He doesn’t know why other students don’t want to speak to him.What’s wrong? It seems that he can never get out of it .He gets angry easily recently.He wants to talk to someone to get out of it.

题型:推断题

左叶肝内胆管易显示是因为

A.肝内胆管在肝左叶内横向走行 

B.肝左叶厚度薄于右叶 

C.肝左叶较右叶更接近于横切面 

D.肝左叶前缘紧贴腹壁 

E.以上都不是

题型:推断题

车轮直径偏差过大将产生“啃轨”故障。()

A、正确

B、错误

题型:推断题

男性,48岁。B超查体时发现左侧肾下极有一4.5cm×3.2cm实性占位,肾门处有一直径1.5cm肿物。静脉肾盂造影:两肾无异常改变。

如果诊断为肾癌,其组织学来源是()

A.肾盂肾盏移行上皮

B.胚胎性肾组织

C.肾血管组织

D.肾内平滑肌组织

E.肾小管上皮细胞

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