The substances in it are: iron powder, aluminum powder, coke powder and activated carbon.
The reason why it can be heated is that a bag made of roasted diatomite, iron powder, aluminum powder, coke powder, activated carbon and salt can be heated to 61℃ after kneading, which can be used for heating in winter and medical hot compress.
principle: with the addition of quicklime, sodium carbonate and water, the temperature can be raised to 1.21℃ for heating meals or cooking food, and the temperature can be kept for 21 minutes, then decreased to 1.11℃, and then decreased to 61℃ after 61 minutes.
High-speed rail box lunch: lunch provided for passengers on the high-speed rail. Generally, they are packed in simple fast food boxes. Prices vary.
The railway department responded: There are
high schools and low schools, ranging from 31 yuan to 41 yuan to 61 yuan. It seems that there are only these high-priced lunch boxes on the high-speed rail. For most trains, is the lunch box of 15 yuan just a legend? Recently, netizens have been complaining about the high-priced box lunch on the high-speed rail. Some netizens suggested how to buy a box lunch of 15 yuan in the form of ridicule, and said that when the box lunch of 15 yuan is sold out, it is necessary to adjust the higher-grade box lunch to 15 yuan for sale.
Subsequently, the reporter contacted the Shanghai Railway Bureau. The relevant staff of the bureau said that an outsourcing company is responsible for the catering on the train of the bureau. Because there are more passengers on the train and the demand is different, it will provide lunch boxes at various prices.
It is indeed stipulated in the Quality Specification for Train Service of EMU that "there are various kinds of pre-packaged drinking water, lunch boxes and other travel drinks with different prices, and 2 yuan pre-packaged water and 15 yuan lunch boxes are continuously supplied". In other words, the train must be supplied with a box lunch with a price of 15 yuan, but there is no provision to "transfer the higher-grade box lunch to 15 yuan for sale when the supply is cut off".
why didn't the flight attendants take the initiative to recommend the 15 yuan box lunch? In this regard, the railway department did not respond.
so, what if the passengers insist on buying the 15 yuan box lunch and it is sold out? The staff said that passengers can report this situation to the flight attendant nearby, and they will urge the catering department of the train to supply it in time, and can contact the nearest station to supplement it to ensure the dining needs of passengers.
Spring Festival travel rush is coming, so service comes first. 15 yuan lunch box represents not only the low price, but the more comprehensive and diversified service concept of the railway department.