As each sample is handled in the same way, the new automated Biotage® PhyPrep platform ensures the plasmid yield and purities are more consistent and reduces the risk of human error. Biopharma laboratories outsourcing plasmid purifications now have the option to keep the work in...
Water filter straws provide an easy way to purify water when camping when access to a water spigot or well is limited. Most filter straws have an active carbon filter that removes potentially harmful contaminants when the user sucks water through the filter. Some of these water straws filter 10...
wealthy families,best friends from Auburn, N.Y.—DorothyWoodruffandRosamondUnderwood—traveledto a settlementin the Rocky Mountainstoteachinaone-room schoolhouse. ThegirlshadgonetoSmithCollege.Theywore expensiveclothes.Soforthemto movetoElkhead,Colo.toinstructthechildrenwhoseshoes wereheldtogetherwithstring w...
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The new invention can purify water quickly. What is it called? A. Water purifier device B. Quick water purifier C. Fast water cleaner D. Smart water purifier 相关知识点: 试题来源: 解析 B。本题考查科技发明的名称。Quick water purifier(快速净水器)可以快速净化水。Water purifier device(净水器...
What does “this problem” in paragraph 2 refer to? A. Sea water is bard to purify. B. The desert is short of water. C. The temperature is high in the desert. D. Desert farms aren’t fit to plant vegetables. 相关知识点:
Plants can purify the air.What part of a plant is mainly responsible for purifying air? A. Leaves. B. Stems. C. Roots. D. Flowers. 相关知识点: 试题来源: 解析 A。植物的叶子主要负责净化空气。茎、根和花在净化空气方面作用较小。
installed in the ductwork of a home’s central heating, ventilation, or air-conditioning (HVAC) units. Here they can safely and efficiently clean the air in the whole building. However, it is also possible to purchase portable air cleaners that work to purify the air in a sin...
The author describes a new technology that can purify water. What kind of writing is this passage? A. Narrative. B. Argumentative. C. Expository. D. Descriptive. 相关知识点: 试题来源: 解析 C。本题考查对文章体裁的判断。A 选项记叙文通常讲述故事;B 选项议论文主要是论证观点;D 选项描写文侧重...
Where's the Best Place to Put an Air Purifier? More Ways to Get Rid of Dust in Your Home The best way is to identify the source of the dust and address it. Also, ensure that your home has adequate ventilation. Other steps you can take include: ...