题目内容

If you receive the signal over radiotelephone of Romeo Papa Tango while using the International Code of Signals, you should ______.

A. report to the caller
B. contimue since he received your last transmission
C. end the transmission
D. repeat your last transmission

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A. less than 25-50%
B. more than 125-150%
C. more than 25-50%
D. less than 125-150%

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废水中的毒物可分为（）三大类。