对离子反应:xR2++yH++O2===mR3++nH2O,下列说法中,错误的是

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问题:

对离子反应:xR2++yH++O2===mR3++nH2O,下列说法中,错误的是 [ ]

A. m=4,R3+是氧化产物                    

B. x=y=m=4,n=2

C. 该反应中R2+得到电子,被还原为R3+       

D. 任何氧化还原反应中氧化剂得电子总数都等于还原剂失电子总数

考点:氧化产物、还原产物氧化还原反应的配平
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下列不同农业部门与所能提供的事物的连线,正确的是 [ ]

A.种植业—苹果                                      

B.林业—面粉

C.渔业—鸭、鹅                                      

D.畜牧业—蛋、乳

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症见“大便秘结,小便清长,腰膝酸软,舌淡苔白,脉沉迟。”首选方剂是( )

A.六味地黄丸
B.左归丸
C.济川煎
D.一贯煎
E.五仁丸

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电气化铁路的输电线常用图所示的方式悬挂在钢缆上.钢缆的A端固定在电杆上,B端连接在滑轮组上.滑轮组由a、b、c三个滑轮构成,配重P由多个混凝土圆盘悬挂在一起组成,配重的总重为G,若不计摩擦和滑轮的重量,则以下说法中正确的是(  )

A.a为动滑轮,B端钢缆受到滑轮组的拉力大小约为3G

B.a为动滑轮,B端钢缆受到滑轮组的拉力大小约为G

C.a、c为动滑轮,B端钢缆受到滑轮组的拉力大小约为3G

D.a、c为动滑轮,B端钢缆受到滑轮组的拉力大小约为G

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In War Made Easy Norman Solomon demolishes the myth of all independent American press zealously guarding sacred values of free expression. Although strictly focusing on the shameless history of media cheerleading for the principal post World War’ Ⅱ American wars, invasions, and interventions, he calls into question the entire concept of the press as some kind of institutional counterforce to government and corporate power.

Many of the examples compiled in this impeccably documented historical review will be familiar to readers who follow the news on the Internet. But such examples achieve flesh impact because of the way Solomon has organized and analyzed them. Each chapter is devoted to a single warhawk argument ( " America Is a Fair and Noble Superpower, " " Opposing the War Means Siding with the Enemy, " "Our Soldiers Are Heroes, Theirs Are Inhuman " ), illustrated with historical examples from conflicts in the Dominican Republic, E1 Salvador, Vietnam, Grenada, Panama, Kosovo, both Iraq wars, and others in which the media were almost universally enthusiastic accomplices.

The book should really be subtitled " War reporting doesn’t just suck, it kills. " It makes you feel like demanding a special war crimes tribunal for corporate media executives and owners who joined the roll-up to " shock and awe " as non-uniformed psywar ops. To be sure, this would raise the issue of whether or not following orders might suffice for the defense of obedient slaves such as Mary McGrory and Richard Cohen, who performed above and beyond the call of duty. " He persuaded me, " McGrory gushed the morning after Colin Powell addressed a plenary session of the United Nations on February 5,2003, declaring that Iraq had weapons of mass destruction. " The cumulative effect was stunning." In the same Washington Post edition, Cohen wrote.

The evidence he presented to the United Nations—some of it circumstantial, some of it absolutely bone-chilling in its detail—had to prove to anyone that Iraq not only hasn’t accounted for its weapons of mass destruction but without a doubt still retains them. Only a fool could conclude otherwise.

Solomon demonstrates how this kind of peppy prewar warm-up degenerates into drooling and heavy breathing once the killing begins. As if observing a heavy metal computer game, the pornographers of death concentrate on the exquisite craftsmanship and visual design of the murder machines, and the magnificence of the fiery explosions they produce.

What is a common misperception of American press()

A. It protects freedom of expression without reserve

B. It concentrates on media support for the wars

C. It discloses the shocking history of invasions

D. It stands on the side of the government

题型:选择题

体内转氨酶的辅酶是()。

A.辅酶A

B.生物素

C.四氢叶酸

D.磷酸吡哆醛

E.焦磷酸硫胺素

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