主轴轴承主要采用（）或（）来润滑。

阴性预测价值

尿崩症应和下列哪些以多尿为主要表现的疾病鉴别

A．精神性烦渴

B．糖尿病

C．肾性尿崩症

D．慢性肾脏疾病

E．流行性出血热多尿期

（91～92题共用题干） 患者，男，46岁。5天前因压榨性胸痛伴大汗3小时来院，诊断急性前壁心肌梗死。因拒绝介入及溶栓治疗而按常规行保守处理，1天后症状缓解，此后病情平稳。4小时前，患者再次发作胸痛，持续50分钟，心尖部可闻3/6级收缩中晚期吹风样杂音。

下列检查指标升高对诊断再梗死意义最大的是（）

A．cTnT

B．CK-MB

C．LDH

D．AST

物体在几个外力的作用下做匀速直线运动，如果撤掉其中的一个力，它不可能做（）

A.匀速直线运动

B.匀加速直线运动

C.匀减速直线运动

D.曲线运动

People can get emotional about immigration. Bill O’Reilly, a talk-show host, devoted a recent segment to the story of an illegal alien who got drunk and accidentally killed two attractive white girls with his car. If only he had been deported for previous misdemeanours, Mr. O’Reilly raged, those girls would still be alive. Another talk-show host, Geraldo Rivera, during an on-air shout-joust(争吵) with Mr. O’ Reilly, denounced his demagogic choice of story-angle as" a sin".

President George Bush tried again this week to bring a more rational tone to the debate. He urged the new Democratic Congress to revive the immigration reforms that the old Republican Congress killed last year. His proposal was broadly the same as before. He said he wanted to make it harder to enter America illegally, but easier to do so legally, and to offer a path to citizenship for the estimated 12m illegals who have already snuck in.

The first part faces few political hurdles and is already well under way. Mr. Bush expects to have doubled the number of Border Patrol agents by the end of next year. The new recruits are being trained. And to defend against the invading legions of would-be gardeners and hotel cleaners, the frontier is also equipped with high-tech military gizmos(小发明), such as unmanned spy planes with infra-red(红外) cameras. This may be having some effect. Mr. Bush boasted that the number of people caught sneaking over the border had fallen by nearly 30% this year.

And the controversial part of Mr. Bush’s immigration package--allowing more immigrants in and offering those already in America a chance to become legal -- is still just a plan. House Republicans squashed it last year. Mr. Bush senses a second chance with the new Democratic Congress, but Democrats, like Republicans, are split on the issue. Some, notably Ted Kennedy, think America should embrace hard- working migrants. Others fret that hard-working migrants will undercut the wages of the native-born.

Mr. Bush would like to see the pro-immigrant wings of both parties work together to give him a bill he can sign. The Senate is expected to squeeze in a debate next month. The administration is trying to entice law-and-order Republicans on board; a recent leaked memo talked of substantial fines for illegals before they can become legal and" much bigger" fines for employers who hire them before they do.

The biggest hurdle, however, may be the Democrats’ reluctance to co-operate with Mr. Bush. Some figure that, rather than letting their hated adversary share the credit for fixing the immigration system, they should stall until a Democrat is in the White House and then take it all. So there is a selfish as well as a moral argument for making a deal.

Which of the following is proposed by Mr. Bush（）

A. Making it harder for immigrants to enter America both legally and illegally

B. Carrying out substantial fine for illegals before they can become legal

C. Setting up more Border Patrol agents by the end of this year

D. Allowing more immigrants in and offering them a chance to become legal