国家计量基准是指经国家质检总局批准,在中华人民共和国境内为了定义、实现、保存、复现量的单位或者一个或多个量值,用作有关量的测量标准定值依据的( )。
A. 测量仪器
B. 量系统
C. 标准物质
D. 实物量具
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Just as a book is often judged outwardly by the quality and appearance of its cover, ______(直接通过外表判断一个人).
China has outlined a new approach to foreign investment, with planners saying they will now focus less on attracting large amounts of cash and more on selecting investments that will bring skills and technology into the country. The change in tactics, detailed in an official document (36) by the National Development and Reform Commission, comes after more than a year of (37) debate over the role foreign investors should play in China’s economy. China has long been one of the world’s top (38) for foreign investment, and international companies poured in more than $70 billion last year, (39) by the country’s low costs, manufacturing prowess and huge (40) market. But the inroads have caused some (41) among both ordinary people and officials, who also want to see domestic companies do well. The new foreign investment plan, which isn’t a specific (42) but rather a statement of broad principles, does say that regulators will look more closely at foreign (43) of local companies and other issues of "national economic security" that have received increasing attention recently. But the vision it advances represents neither an attempt to completely close off China’s economy nor a new round of liberalization. (44) . For instance, new investments by foreign companies will face stricter environmental and land use standards. (45) . The plan said China will continue to open up service industries, though it offered no commitments beyond those already made to the World Trade Organization. (46) .
目前有些大学校园出现贫困大学生“跑腿族” 1.对于这种做法有人表示支持 2.有人并不赞成 3.我的看法 Poor Students’ Running Errands _________________________________________ _________________________________________ _________________________________________ _________________________________________
Sugarless yoghurt (酸奶) could help beat bad breath, tooth decay and gum disease, say scientists. Japanese researchers found eating the yoghurt (62) levels of hydrogen sulphide (硫化氢) -- a major (63) of bad breath -- in 80% of volunteers. The (64) are active bacteria in yoghurt. Details were (65) at a meeting of the International Association for Dental Research. A(n) (66) of 24 volunteers who participated in the study were given strict instructions (67) oral health, diet and medicine taking. They spent two weeks (68) yoghurts and similar foods, like cheese. Researchers then (39) bacteria levels and odor-causing compounds, (70) hydrogen-sulphide. The volunteers then ate 90 grams of yoghurt a day for six weeks. At the end of the study, researchers took (71) again. They found hydrogen sulphide levels (72) in 80% of participants. Dr. Nigel Carter, chief executive of the British Dental Health Foundation, said, "The foundation has long been (73) people’s attention to sugar-free yoghurts as a healthy snack, so it is pleasing to hear that it may have oral health benefits we were previously (74) of." "Although this research is still in the early stages there is no (75) that sugar-free yoghurts provide a much healthier (76) to sweets and chocolate, and we would encourage snackers to (77) them into their diet." (78) , Dr. Carter stressed that the best way to beat bad breath was by (79) a good oral health routine. This involves brushing twice-a-day with fluoride (氟化物) toothpaste, cutting (80) on the frequency of sugary snacks and drinks and visiting a dentist (81) .
A. presented
B. submitted
C. exposed
D. written