题目内容

If you want to take a portable battery, you must know _________

A. every passenger shall not take alone more than 2 portable batteries.
B. its capacity cannot exceed 160Wh.
C. it should have a clear brand.
D. all the above

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"Three nos" means _________________

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Samsung NOTE 7 mobile phones are _______ to be brougt on the aircraft.

A. alowed
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A. 100
B. 200
C. 300
D. 400