I certify that the（）of the portable radio apparatus for survival craft，if provided，complies with the said regulations.<br>A:infection<br>B:functioning<br>C:effecting<br>D:affection

I certify that the（）of the portable radio apparatus for survival craft，if provided，complies with the said regulations.
A:infection
B:functioning
C:effecting
D:affection

出自：海船船员证

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