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【判断题】
刮板式捞渣机因联锁保护动作时，应停炉查明原因。A.
正确
B.
错误
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【单选题】When ___ help, one often receives'Thank you!' or 'It's kind of you!'from others. [ ]
A.
offering
B.
to offer
C.
to be offered
D.
offered
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【单选题】When help, one often says, “Thank you”, or “It’s kind of you．”
A.
offering
B.
to offer
C.
to be offered
D.
offered
【简答题】What kind of information can the computer give to the firemen when they answer a call?
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