下列平衡体系在体积不变时加入所给物质,平衡移动的是 A.FeCl3(aq)+3K

题型:选择题

问题:

下列平衡体系在体积不变时加入所给物质,平衡移动的是

A.FeCl3(aq)+3KSCN(aq)Fe(SCN)3(aq)+3KCl(aq),加入KCl晶体

B.N2(g)+3H2(g)2NH3(g),加入HCl

C.CaCO3(s)CaO(s)+CO2(g),加入CaCO3

D.2SO2(g)+O2(g)2SO3(g),加入N2

考点:化学平衡的有关计算影响化学平衡的因素达到化学平衡的标志化学平衡常数
题型:选择题

Doctors Say Most Heart Disease Preventable

Heart disease is the number one killer, worldwide, of men and women over the age of 60. But people of all ages die of heart attacks each year. And while death rates have declined in the U.S. and many western European countries, they are on the rise in the developing world. 小题1:    .

No one would have guessed that Barbara Teng would have a heart attack. She was not overweight. She did not smoke or exercise.“In 2004, the week after I turned 49, when I was on a business trip in Chicago, I had a major heart attack," she said. 小题2:    . She now exercises daily, and monitors her heart health.

Dr. Patrice Nickens, who is with the National Heart, Lung and Blood Institute, thinks that heart disease is 82 percent preventable. “小题3:    ,” she said, “Men are also facing the same problem, and the key to staying healthy is knowing your numbers”.

“Your weight, your blood cholesterol, blood sugar and your blood pressure are important numbers that can help you take action and reduce your risk,” she said.

小题4:    .

“And the steps to take are simple: don’t smoke, maintain a healthy weight, exercise, know your numbers and talk to your physician and control these risks,” she said.

African-Americans are at higher-than-average risk for heart disease and stroke; people don't even know they have it, which increases the risk. Medstar Washington Hospital Center is trying to reach this population. 小题5:    . For example, helping the people monitor their blood pressure. If people realize they are at risk for heart disease, they'll make lifestyle changes: lose weight, exercise, eat the right foods and keep in touch with a doctor 

A.A healthy lifestyle can prevent heart disease

B.So we must cure heart disease

C.It is the leading cause of death for women

D.With the right training, they can play an important role in community healthE. And that changed her life

F. Lack of exercise causes heart attacks

G. Yet most heart disease is preventable.

题型:选择题

银行的国外活动一般通过()进行。

A.在国外的代理行

B.国外的投资银行

C.国外的分行

D.国外的合作机构

E.国外的经济团体

题型:选择题

治疗蝶窦黏液囊肿合并眶尖综合征应选用()。

A.囊肿穿刺

B.囊肿切除或开放

C.完整切除囊壁

D.囊肿切除或开放后同时行视神经管减压术

E.囊肿切除或开放后同时行眶内侧壁减压术

题型:选择题

Quidway R3680路由器定位为()路由器。

A.核心层

B.汇聚层

C.接入层

D.任一层

题型:选择题

下列有关投资组合风险的观点中正确的是()。

A.证券组合的收益都不低于单个证券的最低收益

B.证券组合的风险都不高于单个证券的最高风险

C.证券组合的收益一定低于单个证券的最低收益

D.证券组合的收益一定高于单个证券的最高风险

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