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（三选一）【有机化学基础】 某芳香族化合物H常用作食用香精，用质谱法测得其相对分子质量为162，分子中C、H、O原子个数比为5:5:1，H只有一个支链，它能与溴的四氯化碳溶液发生加成反应，且在碱性条件下能发生水解反应，产物之一是甲醇，G是H的同分异构体。用芳香烃A为原料合成G的路线如下 (1)G的分子式是_______，H的结构是____________ (2)化合物C的官能团名称是__________，反应②、⑤的反应类型分别是________、_______。预测E分子中苯环侧链核磁共振氢谱峰面积(由小到大)之比为____________。 (3)写出反应①、⑥的化学方程式： ①：_______________________； ⑥：______________________。 (4)符合下列条件的F的同分异构体的结构是___________。 a.分子内含苯环，且苯环上只有一个支链 b．在一定条件下，1mol该物质与足量银氨溶液充分反应，生成4mol银单质
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【简答题】class HelloA { public HelloA() { System.out.println("HelloA"); } { System.out.println("I'm A class"); } static { System.out.println("static A"); } } public class HelloB extends HelloA { public HelloB(...
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【单选题】Children with heart disease complicated with pulmonary infection and cough should
A.
reduce Outdoor activity
B.
increase physical exercise
C.
appropriate activity in bed
D.
absolutely lie on bed rest.
E.
none of the above statements are true
查看完整题目与答案
【单选题】With all the children around, grandma’s heart _____ happiness on the Mid-Autumn Day reunion.
A.
was filled with
B.
was full with
C.
was filled of
D.
was filling with
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【单选题】Which of the following is correct about the passage?
A.
Children with hypertension are unlikely to suffer from heart attack and stroke.
B.
Parents' blood pressure decides their children's blood pressure.
C.
Besides overweight, there are other factors resulting in hypertension.
D.
Vigorous exercise sometimes will lead to heart trouble.
查看完整题目与答案
【单选题】Children with heart disease complicated with pulmonary infection and cough should
A.
reduce outdoor activity
B.
increase physical exercise
C.
appropriate activity in bed
D.
absolutely lie on bed rest.
E.
none of the above statements are true
查看完整题目与答案
【多选题】室外排水管道常用的非金属管材包括以下哪几种( )
A.
混凝土管
B.
钢筋混凝土管
C.
UPVC管
D.
钢管
查看完整题目与答案
【单选题】We can conclude from the passage that ______.
A.
children with hypertension are unlikely to suffer from heart attack and stroke
B.
parent's blood pressure decides their children's blood pressure
C.
besides overweight, there are other factors resulting in hypertension
D.
vigorous exercise sometimes will lead to heart trouble
查看完整题目与答案
【简答题】为了加快推广各种深奥的佛教理论,古人创造了____画。
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【单选题】Her heart was filled with compassion for the motherless children.
A.
sympathy
B.
regret
C.
wishfulness
D.
sorrow
查看完整题目与答案
【单选题】Which intervention is wrong for nursing care of the children with congenital heart defects?
A.
Provide adequate nutrition
B.
Prevent infections
C.
Patient and family education
D.
Should not receive their immunization
E.
Provide small frequent feedings
查看完整题目与答案
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【简答题】class HelloA { public HelloA() { System.out.println("HelloA"); } { System.out.println("I'm A class"); } static { System.out.println("static A"); } } public class HelloB extends HelloA { public HelloB(...
查看完整题目与答案
【单选题】Children with heart disease complicated with pulmonary infection and cough should
A.
reduce Outdoor activity
B.
increase physical exercise
C.
appropriate activity in bed
D.
absolutely lie on bed rest.
E.
none of the above statements are true
查看完整题目与答案
【单选题】With all the children around, grandma’s heart _____ happiness on the Mid-Autumn Day reunion.
A.
was filled with
B.
was full with
C.
was filled of
D.
was filling with
查看完整题目与答案
【单选题】Which of the following is correct about the passage?
A.
Children with hypertension are unlikely to suffer from heart attack and stroke.
B.
Parents' blood pressure decides their children's blood pressure.
C.
Besides overweight, there are other factors resulting in hypertension.
D.
Vigorous exercise sometimes will lead to heart trouble.
查看完整题目与答案
【单选题】Children with heart disease complicated with pulmonary infection and cough should
A.
reduce outdoor activity
B.
increase physical exercise
C.
appropriate activity in bed
D.
absolutely lie on bed rest.
E.
none of the above statements are true
查看完整题目与答案
【多选题】室外排水管道常用的非金属管材包括以下哪几种( )
A.
混凝土管
B.
钢筋混凝土管
C.
UPVC管
D.
钢管
查看完整题目与答案
【单选题】We can conclude from the passage that ______.
A.
children with hypertension are unlikely to suffer from heart attack and stroke
B.
parent's blood pressure decides their children's blood pressure
C.
besides overweight, there are other factors resulting in hypertension
D.
vigorous exercise sometimes will lead to heart trouble
查看完整题目与答案
【简答题】为了加快推广各种深奥的佛教理论,古人创造了____画。
查看完整题目与答案
【单选题】Her heart was filled with compassion for the motherless children.
A.
sympathy
B.
regret
C.
wishfulness
D.
sorrow
查看完整题目与答案
【单选题】Which intervention is wrong for nursing care of the children with congenital heart defects?
A.
Provide adequate nutrition
B.
Prevent infections
C.
Patient and family education
D.
Should not receive their immunization
E.
Provide small frequent feedings
查看完整题目与答案
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