When travelling overseas, do you buy water in plastic bottles or take your chances with tap water? Imagine you are wandering about on a Thai island or __1__ the ruins of Angkor. It's hot so you grab a bottle of water from a local vendor. It's the safe thing to do, right? The bottle is __2__ , and the label says "pure water". But maybe what's inside is not so __3__ . Would you still be drinking it if you knew that more than 90 percent of all bottled water sold around the world __4__ micro-plastics? That's the conclusion of a recently __5__ study, which analyzed 259 bottles from 11 brands sold in nine countries, __6__ an average of 325 plastic particles per litre of water. These micro-plastics included a __7__ commonly known as PET and widely used in the manufacture of clothing and food and __8__ containers. The study was conducted at the State University of New York on behalf of Orb Media, a journalism organization. About a million bottles are bought every minute, not only by thirsty tourists but also by many of the 2.1 billion worldwide who live with unsafe drinking water. Confronted with this __9__ , several bottled-water manufacturers including Nestle and Coca-Cola undertook their own studies using the same methodology. These studies showed that their water did contain micro-plastics, but far less than the Orb study suggested. Regardless, the World Health Organization has launched a review into the __10__ health risks of drinking water from plastic bottles.A.adequateB. admiringC. containsD. defendingE. evidenceF. instantG. liquidH. modifiedI. naturalJ. potentialK. releasedL. revealingM. sealedN. solvesO. substance
(Lb4A3061).防止制粉系统爆炸的主要措施有( )。
A. 解决系统积粉,消除火源,控制系统温度;
B. 认真监盘,细心调整;
C. 防止磨煤机堵煤;
D. 防止磨煤机断煤。
(Je4A2129).停炉时间超过( )天,应将原煤斗中的煤烧空。
A. 7;
B. 10;
C. 14;
D. 40。
下列属动态干燥的是( )
A. 烘房干燥
B. 烘箱干燥
C. 沸腾干燥
D. 冷冻干燥