
六年级科学.单元八.食物的保存
Quiz
•
Science
•
6th Grade
•
Medium
TAN Moe
Used 298+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下都是微生物所需的生长条件,除了
真空
空气
水分
适当的酸度
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
大部分微生物在什么温度下繁殖最快速?
零度以下
超过 1000C
460C 到 990C 之间
C.200C 到 450C 之间
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
微生物如何使食物腐败?
消化食物的营养
分泌毒素
分解食物的有机物
吸取食物的营养
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
我们保存食物的目的是什么?
为了研究食物的包存法与食物的保存期限之间的关系
为了延长食物的保存期限和食用期限
为了使食物更美味
为了使食物里的营养更丰富
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
罐装食品的保存期能达数年之久主要是因为 ___________.
罐头内没有水分。
罐中的食物已经过高温杀菌。
食物里的水分已经被抽干。
罐头内形成一定的真空度
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪一个是罐头制作的最后一个过程?
抽出空气
加盖密封
高温杀菌
烹煮食物
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以上是一种食品的有效食用期限。购买食品前,需检查该食品的有效期限。为什么?
确保食品的价格不会改变
食品过了有效食用期限会变得淡而无味
确保食品能安全食用
确保食品不会面临短缺
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