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问题 单项选择题

呼吸衰竭严重缺氧可导致机体内的变化，下列哪项错误

A．可抑制细胞能量代谢的氧化磷酸化作用
B．可产生乳酸和无机磷，引起代谢性酸中毒
C．氢离子进入细胞内引起细胞内酸中毒
D．体内离子转运的钠泵损害，引起细胞内高钾

答案

参考答案：D

单项选择题

A variety of illegal acts committed by people in the course of their employment, for their own personal gain, are collectively known as white-collar crime. Embezzlement, theft and trading securities (1) insider information are common forms of white-collar crime. The majority of cases involve low-level employees who steal because they are under (2) financial stress. Many plan to (3) the money back as soon as possible but may never do so. Their crimes are usually never (4) because the amounts of money are small, and no one notices the (5) .

(6) , there are some very large cases of white-collar crime, such as multimillion-dollar stock market or banking seams that take years to discover and are extremely difficult and expensive to (7) .

White-collar crime is not (8) to the business sector. Government employment, especially (9) the city level, also provides opportunities to (10) one’s pockets. (11) , building inspectors accept bribes and full-time employees receive (12) payments.

Although white-collar crime is less (13) than street crime, it involves (14) more money and harm to the public than crimes committed by street criminals. It is (15) that there are more criminals (16) the office suites than in the streets, yet the (17) of white-collar makes it difficult to uncover the offenses and pursue the offenders. As the economy (18) from manufacturing to services and electronic commerce, opportunities for white-collar crime (19) , while the technology needed to stop such crimes will (20) .

2（）

A.temporary

B.constant

C.persistent

D.transient
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单项选择题

油、气、水三相混合渗流，当含气饱和度大于（）时，出现纯气流。

A、40%

B、50%

C、60%

D、80%
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