试题与答案

下列反应的离子方程式中,正确的是( ) A.向FeCl3溶液中通入过量H2S气体

题型:选择题

题目:

下列反应的离子方程式中,正确的是( )

A.向FeCl3溶液中通入过量H2S气体:Fe3++H2S=FeS↓+2H+

B.向NaAlO2溶液中通入过量的CO2气体:CO2+2H2O+AlO2=Al(OH)3↓+HCO3

C.硫酸亚铁溶液中加入双氧水:Fe2++2H2O2+4H+=Fe3++4H2O

D.FeI2溶液中加入少量氯水:2Fe2++Cl2=2Fe3++2Cl

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0425/17c05987b94ac07746262b61f372cdac.html

下面是错误答案,用来干扰机器的。

(1) (2) (3) +x方向题目分析:由图可知波长λ=20m(1)若波的传播方向为+x方向,则有: (2)若波的传播方向为-x方向,则有:(3)若波速为450m/s,则波在Δt=t2-t1时间内传播的距离 ...

试题推荐
题型:单项选择题

LIPITOR

ABOUT LIPITOR

Lipitor is a prescription medicine. Along with diet and exercise, it lowers "bad" cholesterol (胆固醇) in your blood. It can also raise "good" cholesterol.

Lipitor can lower the risk of heart attack in patients with several common risk factors, including family history of early heart disease, high blood pressure, age and smoking.

WHO IS LIPITOR FOR

Who can take LIPITOR:

· People who cannot lower their cholesterol enough with diet and exercise.

· Adults and children over 10.

Who should NOT take LIPITOR:

· Women who are pregnant, may be pregnant, or may become pregnant. Lipitor may harm your unborn baby.

· women who are breast-feeding. Lipitor can pass into your breast milk and may harm your baby.

· People with liver(肝脏) problems.

POSSIBLE SIDE EFFECTS OF LIPITOR

Serious side effects in a small number of people:

· Muscle(肌肉)problems that can lead to kidney(肾脏) problems, including kidney failure.

· Liver problems. Your doctor may do blood tests to check your liver before you start Lipitor and while you are taking it.

Call your doctor right away if you have:

· Unexplained muscle pain or weakness, especially if you have a fever or feel very tired.

· Swelling of the face, lips, tongue, and/or throat that may cause difficulty in breathing or swallowing.

· Stomach pain. Some common side effects of LIPITOR are:

· Muscle pain

· Upset stomach

· Changes in some blood tests

HOW TO TAKE LIPITOR

DO :

· Take Lipitor as prescribed by your doctor.

· Try to eat heart-healthy food while you take Lipitor.

· Take Lipitor at any time of day, with or without food.

· If you miss a dose (一剂), take it as soon as you remember. But if it has been more than 12 hours since your missed dose, wait. Take the next dose at your regular time.

Don’ t:

· Do not change or stop your dose before talking to your doctor.

· Do not taking new medicines before talking to your doctor.

Taking Lipitor is helpful for ()

A.breast-feeding women

B.women who are pregnant

C.adults having heart disease

D.teenagers with liver problems

查看答案
题型:单项选择题 案例分析题

女性,62岁,曾被诊断为"轻型"糖尿病,用饮食管理即能控制血糖在"正常范围",近10天因口齿不清,在外院诊断为"脑血管意外",昏迷2天后转入本院治疗。

转入病房后经上述检查,CT发现为广泛性脑腔隙性梗死,血糖30mmol/L,血钠165mmol/L,尿酮(+),患者昏迷的原因应为()

A.高渗性非酮症性糖尿病昏迷

B.糖尿病酮症酸中毒

C.乳酸性酸中毒

D.广泛性脑腔隙性梗死

E.脑血栓形成

查看答案
题型:不定项选择

金某欲买齐某的一匹马(包括套在马身上的马鞍),约定价格为1200元,但因金某,所带的钱不够,只付给齐某600元,两人还同时约定,该马的所有权自即日起转移,3日后金某来牵马并支付余款600元。第二天孙某看到齐某牵着马,提出愿以1400元买此马(包括马鞍),齐某同意。孙某向齐某付清1400元并将马牵走。后金某来齐某家牵马,得知齐某已将马卖给他人,非常生气。请回答下列问题。

孙某将马牵回去后,发现马鞍完全报废,根本不能使用,要求解除合同,那么以下说法正确的是:

A.就马鞍部分可以解除,但解除的效力不及于马

B.就马和马鞍均可以解除合同

C.就马鞍部分也不得解除合同

D.如果不是马鞍报废,而是马患有恶疾,此时,金某可以就马解除合同,但解除效力不及于马鞍

查看答案
微信公众账号搜索答案