维管系统
参考答案:
植物体各器官中的由维管束构成的一个连续统一的系统,主要行使输导水分、矿质和同化产物的功能。包括了输导水分和无机盐的木质部和输导有机养料的韧皮部。
肠杆菌属和不发酵革兰阴性菌属间初步鉴别方法是()。
A.中国蓝上生长粉色菌落
B.革兰染色,观察镜下形态
C.双糖、触酶、氧化酶、硝酸盐
D.DNA酶测试
E.V-P试验
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) .
10()
A.line
B.fill
C.pack
D.stuff