一氧化碳中毒时，血中明显增多的血红蛋白是（） A.碳氧血红蛋白 B.高铁血红蛋白 C

近百年来,人类关于储存介质的发明,经历了从录音带到软盘、光盘、U盘等的过程。随着科技进步,存储能力更强的介质还将不断出现。这说明

A．事物总处在渐进和不显著的变化中

B．事物发展的道路是迂回的、曲折的

C．事物发展的方向是前进的和上升的

D．有序的系统内部结构促进事物发展

某实施监理的20层综合办公楼工程，施工总承包单位与建设单位于2011年2月20日签订了施工合同。合同中约定：（1）人工费综合单价为45元／工日。（2）一周内非承包方原因停水、停电造成的停工累计达8h可顺延工期1d。（3）施工总承包单位须配有应急备用电源。工程于3月15日开工。施工过程中发生如下事件：事件1：3月19～20日遇罕见台风暴雨迫使基坑开挖暂停，造成人工窝工20工日，1台挖掘机陷入黏土中。事件2：3月21日施工总承包单位租赁1台起重机（1500元／台班）吊出陷入黏土中的挖掘机（500元／台班），并进行维修保养，导致停工2d，3月23日上午8时恢复基坑开挖工作。事件3：5月10日上午地下室底板结构施工时，监理工程师口头紧急通知停工，5月11日监理工程师发出因设计修改而暂停施工令；5月14日施工总承包单位接到监理工程师要求5月15日复工的指令。期间共造成人工窝工300工日。事件4：6月30日地下室全钢模板吊装施工时，因供电局检修线路停电导致工程停工8h。针对事件1～3，施工总承包单位及时向建设单位提出了工期和费用索赔。

事件1～3中，施工总承包单位可获得的工期和费用索赔各是多少？

高清电视

井下不得（）检修、搬迁电器设备、电缆和电线。

Earlier this summer Arnold Schwarzenegger, California’s governor, said that the state’s penal system was "falling apart in front of our very eyes". Indeed so. Some 172,000 inmates are crowded into institutions—from the state’s 33 prisons to its 12 "community correctional facilities"—that are meant to house fewer than 90,000. Drug abuse is rampant; so too are diseases such as HIV and hepatitis C. Race-based gangs pose the constant threat of violence, riot and even murder. And with more than 16,000 prisoners sleeping in prison gymnasiums and classrooms, rehabilitation programs are virtually non-existent—which helps to explain why two-thirds of California’s convicts, the highest rate in the country, are back in prison within three years of being released.

Will the governor’s summons of a special session of the state legislature, beginning this week, bring a remedy The reason for the session is to discuss Mr. Schwarzenegger’s request for almost $ 5.8 billion of public money to be pumped into the prison system. Bonds for $ 2 billion would finance ten 500-bed "re-entry facilities" for prisoners nearing the end of their sentences; another $ 2 billion would expand existing prisons; $1.2 billion would be earmarked for two new prisons; and $ 500m would go for new prison hospitals.

Money alone will provide neither an immediate solution nor a lasting one. The first problem is that California simply puts too many offenders in prison. The imprisonment rate, which has risen almost eight-fold since 1970 and is way ahead of any European country, has consistently meant overcrowding despite the construction of 22 new prisons in the past 20 years.

The 1994 "three-strikes" law, approved by voters in a referendum, means handing out 25-years-to-life sentences for often trivial third offences—and results in the growing presence in prison of elderly inmates who cost the taxpayer far more than the average of $ 34,000 a prisoner. Meanwhile, the practice of returning parole violators to prison, even for relatively trivial mis-steps such as missing a drugs test, also strains the system; some 11% of inmates are parole violators. Added to all these are more than 5,000 illegal immigrants being held on behalf of the federal government.

The second problem is that any attempt to reform California’s penal policy becomes hostage to politics. Two years ago, the governor was expressing optimism. He added the word "rehabilitation" to California’s department of corrections, appointed Rod Hickman, a reform- minded former prison guard, to oversee the system and promised to lessen the power of the 31,000-p prison guards’ union, not least by breaking the "code of silence" that protects corrupt or violent guards. But that was then. The reality now is that Mr. Hickman resigned in March. Evidence indicates that the governor’s office may have given the code of silence in California’s prisons a new lease on life.

Many experts say that with no moderation in sentencing policies on the horizon, the prison population is expected to grow by another 21,000 over the next five years—enough to out-pace any prison-building program. Thus, the dream of prison reforms will never touch the ground.

According to the passage, California has the highest rate of returning prisoners because（）

A.the prisons in California are too crowded

B. the prisons failed to rehabilitate the prisoners

C.the prisoners can sleep in the gymnasiums and classrooms

D. the prisoners are released after only three years of imprisonment