stationswereconstructed. ·DuringWorldWarⅡ,the undergroundsystemhadsomeunusual uses. ·After1945,theundergroundsystem was7.___andmorelineswere added,whichhelpedmakethesystem more8.___. ·In1979,theJubileeLinewasopenedin honourofthetwenty-fifth9.___of ElizabethⅡbecomingthequeen. Theundergroundsystem...
Type of propulsion (diesel, hybrid, compressed natural gas (CNG), fuel cell electric, battery electric, overhead cable electric (commonly known as a trolleybus) Fare collection (on-board, off-board, honor, no fares) Boarding (curb height or raised platforms for level boarding; front door ...
Compressed natural gas (CNG) vehicles show varied NOxNOx emissions compared with diesel, with some cases even higher [33]. Volatile organic compounds (VOCs) are compounds that evaporate easily at room temperature, commonly found in fossil fuels and as contaminants in groundwater. They originate ...
However, the density of fungal spores in subway stations is within acceptable sanitation levels for public buildings [110]. A ventilation control system equipped with a PM10 feedback device can increase the concentration of PM10 on a platform from an unhealthy level for sensitive people to a mod...
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