酶的竞争性抑制剂具有下列哪种动力学效应() A.Vm不变,Km增大 B.Vm不变,K

题型:单项选择题 A1/A2型题

问题:

酶的竞争性抑制剂具有下列哪种动力学效应()

A.Vm不变,Km增大

B.Vm不变,Km减小

C.Vm增大,Km不变

D.Vm减小,Km不变

E.Vm增大,Km增大

考点:初级药士生物化学生物化学题库
题型:单项选择题 A1/A2型题

In WAR MADE EASY Norman Solomon demolishes the myth of an 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 fresh impact because of the way Solomon has organized and analyzed them. Each chapter is devoted to a single war hawk 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, " ncGrory gushed(热情洋溢地表达) 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—or possibly a Frenchman—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.

Solomon mentioned the computer game in order to ______.

A.blame the press for its guilt in the war

B.compare the prewar preparations and the real war

C.stress the large scale of mass destruction

D.describe the visual effects of the murder machines

题型:单项选择题 A1/A2型题

信号系统应由()组成,并应设必要的故障监测和报警设备。

A、行车指挥

B、列车运行控制设备

C、行车指挥和列车运行控制设备

D、列车运行控制设备和ATO系统

题型:单项选择题 A1/A2型题

已知氧化还原反应:2Cu(IO3)2+24KI+12H2SO4=2CuI↓+13I2+12K2SO4+12H2O,其中1mol氧化剂在反应中得到的电子为

A.10mol

B.11mol

C.12mol

D.13mol

题型:单项选择题 A1/A2型题

不属于上肢深静脉的是()

A.腋静脉

B.肱静脉

C.肘正中静脉

D.尺静脉

E.桡静脉

题型:单项选择题 A1/A2型题

踱烧伤局部水疱形成的主要病理基础是()

A.损伤组织分解产物刺激

B.上皮细胞变性

C.热力使蛋白溶解

D.毛细血管扩张、充血,少量血浆样液体渗到细胞间隙

E.毛细血管扩张、充血,渗出液积于表皮和真皮之间

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