成品、半成品、构配件，在使用前应按规定抽取试样，交检测机构进行复试，复试结果合格方可使用。( )

未分类题In order for the RU-486 pill to be approved for use in such nations as the United States, it is necessary that______.A．the drug be proven absolutely safe for human useB．a consensus be reached in the nation regarding the proper usage of such drugs in a moral senseC．influential opposition groups accept it, opening the way for political feasibilityD．the question of when life begins be satisfactorily resolved and the current health concerns related to the pill clarified

未分类题The main point of the text is that______.A．revising history must be avoided in all situations at all costsB．the revision of history leads to a flawed perception resulting in loss of vital lessonsC．if revision of history goes on, the meaning behind the revised events will lose meaningD．historical revision is an international problem affecting all nations and peoples

未分类题The explanation of the word 'wired' probably indicates that______.A．people always misunderstand the functions of the InternetB．Internet is partly responsible for the vanishing of paper booksC．people call the Internet 'wired world' for a reasonD．Internet will take over the functions of paper books

未分类题The most significant reason for the falling sales of paper books is that______.A．electronic books are taking over more and more market share of paper booksB．people' minds don't have the space for reading due to all kinds of temptationC．bookstores are out of business as people prefer to borrowing books from the libraryD．people think things on the Internet are more worthy of their attention

未分类题According to the text, the followings contribute to the wreck of Titanic except______.A．the company didn't resort to steel rivets in TitanicB．small forges employed by the company lacked good riveting skillsC．some material the company bought was not rivet qualityD．proficient riveters were far from suffice

未分类题By mentioning the work of Gary Steynghart, the author intends to______.A．advocate the idea that reading physical paper books is out of fashionB．introduce a brand new electronic product even more omnivorous than i-phoneC．prove that books will be outweighed by reality shows and porn in the futureD．indicate that books are left out in fictions describing the future world

未分类题The first sentence of paragraph 4 tells us that______.A．because truthful advertising is enforced, the negative results previously mentioned in the text are avoidedB．because the previously mentioned negative results are avoided, truthful advertising can and does feasibly occurC．because of truthful advertising laws, the quality of a product will always live up to its manufacturer's boastsD．in the real economy, consumers trust the boasts of producers

未分类题The main point of the text is that______.A．the negative effects of a lack of truthful advertising laws must be avoided at all costsB．because truthful advertising laws exist, the economy is prosperous and healthyC．without enforceable and reliable truth in advertising, the American economic system could not properly functionD．the result of a lack of truthful advertising laws in the United States is foreseeable, and thus examinable

未分类题From paragraph 2, it can be deduced that______.A．growth is necessary for an economy to be strongB．when growth is not occurring, shoppers will buy less goodsC．unreliable goods will not be purchasedD．if an economy is experiencing growth, it will be a strong one

未分类题The main point of paragraph 5 is that______.A．commandos must move on after the business has been establishedB．the agents in each phase of a business's development are useful exclusively only in their own phaseC．while 'commandos', 'army' and 'police' all have vital roles in a business's development, those roles do not always overlapD．the tactics utilized by 'commandos' are not appropriate outside of the first phase

未分类题In paragraph 2, 'These mavericks go about starting the business using their own methods, heedless of convention or tradition. ' means that______.A．the 'commandos' are free to use whatever means at their disposal to get the business startedB．if the 'commandos'' only work within established conventions and methods, they are doomed to failureC．commandos work almost exclusively outside the constraints of tradition and conventionD．the 'commandos' are reckless risk-takers not bound by any rules

未分类题The scientists in the text have done the followings except______.A．examining the Titanic rivets to find cluesB．tracking down the evidence from archivesC．applying modern techniquesD．discovering Titanic' s resting place

未分类题In paragraph 2, 'it is not a far stretch to believe that' is most similar in use to______.A．it is sometimes believed thatB．the most likely conclusion is thatC．it logically follows thatD．it is not unreasonable to believe that

未分类题On which of the following would McCarty least probably agree?A．Shipbuilder's ambition is the direct cause of the sad tale of Titanic.B．Had the shipbuilder ordered No.4 bar, Titanic could have avoided such a tragedy.C．The rivets had popped along the seams in Titanic after hitting an iceberg.D．Harland and Wolff was faced with persistent rivet and riveter crisis.

未分类题The author views deja vu as______.A．an issue that defies explanation, forcing one to rely on suppositionB．the phenomena that is best answered by scienceC．a contentious issue that is hard to resolveD．a question with different answers based on whether one believes in religion, mysticism or science most strongly