e等公務園+學習平臺
技術大解密：地鐵標誌製作及美國軍隊披薩野戰口糧的秘密 Tech Revealed Subway Sign in London and MRE Pizza for the U.S. Military《解答》
01What is the key challenge in stabilizing pizza for a long period of time?
- APreventing water leaching between components正解
- BMaintaining consistent taste and texture
- CFinding suitable ingredients for the dough
- DMinimizing the use of preservatives
02What is the purpose of the oxygen absorbing sachet in the pizza MRE packaging?
- ATo enhance the flavor of the pizza
- BTo make the pizza last longer正解
- CTo absorb excess moisture
- DTo prevent the growth of bacteria
03What was the main disadvantage of using canned food for soldiers' rations?
- AIt required refrigeration
- BIt was too expensive
- CIt took up valuable space正解
- DIt had a short shelf life
04Where is the London Underground's roundel sign manufactured?
- ALondon
- BParis
- CIsle of Wight正解
- DFarrington
05What ingredient is added to the pizza sauce to prevent it from seeping into the dough?
- ASugar
- BSalt
- CTomato paste
- DHumectants正解
06What surprising ingredient is added to the enamel mixture to prevent cracking during firing?
- AClay
- BQuartz
- CUrea正解
- DGlass
07What was invented in 1976 as an alternative to canned food?
- AFlexible packaging正解
- BFreeze-dried food
- CVacuum-sealed containers
- DPortable refrigerators
08What material is the roundel sign made of?
- ASteel
- BPlastic
- CEnamel正解
- DGlass
09What is the final step in the manufacturing process of the roundel sign?
- AApplying enamel ink
- BBaking in the furnace
- CScrewing the sections together正解
- DCutting the steel back plate
10What is the purpose of the MRE?
- ATo serve as a lightweight alternative to canned food for soldiers during battles.正解
- BTo offer people a variety of food choices, including pizza, during deployments.
- CTo supply soldiers with a low-calorie meal that can last up to 1,000 days.
- DTo provide a quick and convenient meal option for soldiers at home.
11Which technique is used to apply colors to the roundel sign?
- ASilk screen printing正解
- BSpray painting
- CHand-painting
- DEngraving
12How do scientists simulate three years of changing climates in a shorter time?
- ABy using special ovens
- BBy storing the pizza slices in refrigerators
- CBy condensing the changes into six months正解
- DBy exposing the pizza slices to extreme temperatures
13What is the main challenge in stabilizing pizza for a long period of time?
- AEnsuring the dough is super tender.
- BPreventing the sauce from having too much acidity.
- CInteracting with different components of the pizza.正解
- DFinding a suitable container for the pizza.
14To make it into a long-lasting tube sign, a strong steel backplate is cut into a roundel shape, __________ a computer-controlled cutting machine.
- Awith正解
- Bof
- Cto
15What is the main purpose of the London Underground's roundel sign?
- ATo symbolize Britain's capital city正解
- BTo provide directions to tourists
- CTo withstand London's rush hour
- DTo decorate the tube stations
16What is the temperature at which the signs are baked in the furnace?
- A200 degrees Celsius
- B500 degrees Celsius
- C800 degrees Celsius正解
- D1000 degrees Celsius
17What is the purpose of silk screen printing in the sign-making process?
- ATo add colors to the sign正解
- BTo apply enamel paste to the steel
- CTo cut the steel back plate into a roundel shape
- DTo fuse the enamel ink to the sign
18How are the signs coated with enamel applied to the steel back plate?
- ABrushed on with a brush
- BSlop onto the bare steel
- CSprayed on with an air gun正解
- DDipped in enamel mixture
19What feedback did soldiers give after tasting the pizza MRE?
- AIt tasted fresh out of the oven正解
- BIt was too sweet and acidic
- CThe cheese was not good
- DThe crust was too hard
20What is the shelf life requirement for MREs?
- A1 year without refrigerating
- B3 years without refrigerating正解
- C5 years without refrigerating
- D10 years without refrigerating
21What material is used to make the screens for silk screen printing?
- ASilk
- BNylon正解
- CPine oil
- DClay