40.The IAMSAR Manual provides guidelines for a common aviation and maritime approach to organizing and providing ____ services.
(A)SAR
(B)VTS
(C)GMDSS
(D)NAVTEX

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統計： A(92), B(37), C(54), D(23), E(0) #625198

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IAMSAR手冊提供了組織和提供搜救服務...
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