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【单选题】
一段直导线在均匀磁场中作图示的四种运动，在导线中没有感应电动势的是：【图片】A.
ab
B.
abc
C.
abd
D.
bcd
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】食品冷藏的温度范围为-2°C— 16°C。冷藏库俗称 。食品冻藏的温度范围为-2°C— -30°C。冻藏库俗称 。
【简答题】干烤灭菌法的温度为______,维持时间是______。
【简答题】Part II. Long Conversations Directions: In this section, you will hear some long conversations. At the end of each conversation, some questions will be asked about what was said. Both the conv...
【单选题】Section A Understanding Long Conversations (每小题2.5分,共25分)Directions: In this section you'll hear a long conversation or conversations. Listen carefully and choose the best answer to the questions ...
A.
Brother and sister.
B.
Father and daughter.
C.
Mother and son.
D.
Husband and wife.
【简答题】b4u4 long conversations (把正确的选项写在相应的位置) 2. long conversations
【单选题】Section B Long conversations Listen to the long conversations and choose the best answer to each question you hear. Conversation 1 1.
A.
45 minutes
B.
1.5 hours
C.
2 hours
D.
4 hours
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