A、A.always
B、B.never
C、C.sonetimes
D、D.sometime
更多“Mariners are warned that fog signals should（）be relied upon implicity.”相关的问题
A、marine broadcast Notice to Mariners B、Weekly Notices to Mariners C、corrected editions of charts D、Light Lists
A、ECDIS warnings and messages B、Hydrographic Office data C、Notice to Mariners information D、All of the above
A、Notices to Mariners B、Sailing Directions C、List of Lights and Signals D、Guide to Port Entries
A、publications B、notices to mariners C、supplements D、Annual Summary of Admiralty Notices to Mariners
A、The topics for warnings included in HYDROLANTS，HYDROPACS，and NAVAREA warnings are the same B、NAVAREA warnings concern only coastal navigation and inland navigation in large bays or sounds such as Puget Sound C、The United States is responsible for NAVAREA warnings in the North Atlantic north of 7°N，and west of 15°W D、Long range radio navigational warnings are usually broadcast by radiotelephone，radiotelegraph，and radio-teletypewriter
A、they can be used by mariners who do not know Morse code B、only an ordinary FM radio is necessary to receive these warnings C、information on a given topic is only broadcast at specified times D、they cover a broad spectrum of the radio band allowing reception on almost any type of receiver
A、Weekly Admiralty Notices to Mariners B、The Mariners Handbook C、Ocean Passages for the World D、Symbols and Abbreviations used on Admiralty Charts，Chart 5011
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