Here is a question about this article: The low mechanical complexity of hydraulic elevators in comparison to traction elevators makes them ideal for low rise, low traffic installations. They are less energy efficient as the pump works against gravity to push the car and its passengers upwards; this energy is lost when the car descends on its own weight. The high current draw of the pump when starting up also places higher demands on a building's electrical system. There are also environmental concerns should the lifting cylinder leak fluid into the ground.
What is the answer to this question: What concerns arise when the lifting cylinder leaks fluid into the ground?
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So... environmental concerns

Here is a question about this article: Numerous regional transportation projects have occurred in recent years to mitigate congestion in San Diego. Notable efforts are improvements to San Diego freeways, expansion of San Diego Airport, and doubling the capacity of the cruise ship terminal of the port. Freeway projects included expansion of Interstates 5 and 805 around "The Merge," a rush-hour spot where the two freeways meet. Also, an expansion of Interstate 15 through the North County is underway with the addition of high-occupancy-vehicle (HOV) "managed lanes". There is a tollway (The South Bay Expressway) connecting SR 54 and Otay Mesa, near the Mexican border. According to a 2007 assessment, 37 percent of streets in San Diego were in acceptable driving condition. The proposed budget fell $84.6 million short of bringing the city's streets to an acceptable level. Port expansions included a second cruise terminal on Broadway Pier which opened in 2010. Airport projects include expansion of Terminal 2, currently under construction and slated for completion in summer 2013.
What is the answer to this question: What tollway connects Otay Mesa with SR 54?
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So... The South Bay Expressway

Here is a question about this article: The above are further subdivided into 31 planes of existence.[web 4] Rebirths in some of the higher heavens, known as the Suddhavasa Worlds or Pure Abodes, can be attained only by skilled Buddhist practitioners known as anagamis (non-returners). Rebirths in the Arupyadhatu (formless realms) can be attained by only those who can meditate on the arupajhanas, the highest object of meditation.
What is the answer to this question: Rebirth into the Suddhavasa Worlds or Pure Abodes can only be attained by who?
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So...
skilled Buddhist practitioners known as anagamis (non-returners)