A、V-shaped ripple with the point of the V pointing upstream
B、V-shaped ripple with the point of the V pointing downstream
C、small patch of smooth water on a windy day
D、smoothing out of the vessel's wake
更多“A snag or other underwater obstruction may form a（）.”相关的问题
A、V-shaped ripple with the point of the V pointing upstream B、V-shaped ripple with the point of the V pointing downstream C、small patch of smooth water on a windy day D、smoothing out of the vessel's wake
A、all vessels, regardless of size and commercial application B、any barge or other ship which is constructed or operated in such a manner that no oil in any form can be carried aboard C、an oil tanker of 150 gross tons or above, or other ship of 400 gross tons or above D、an oil tanker of 400 gross tons and above, or other ships of 150 gross tons and above
A、receiving messages/one station B、transmission/ one coast station or ship C、communicating /one ship D、contacting/other
A、A. I am considered an expert on this. I have successfully done this multiple times without assistance or error. I train or supervise others on this activity. Others come to me when they have questions or need assistance with this. B、B. I have successfully done this without assistance and with few errors, but I do not train or supervise others on this activity. C、C. I am proficient at this. I have successfully done this on my own, but I occasionally require assistance for some types of problems encountered when doing this and/or occasionally make minor errors. D、D. I have successfully done this with the assistance of others or specific instructions. E、E. I am a novice. I have not done this yet or I am learning.
A、I am considered an expert on this. I have successfully done this multiple times without assistance or error. I train or supervise others on this activity. Others come to me when they have questions or need assistance with this. B、I have successfully done this without assistance and with few errors, but I do not train or supervise others on this activity. C、I am proficient at this. I have successfully done this on my own, but I occasionally require assistance for some types of problems encountered when doing this and/or occasionally make minor errors. D、I have successfully done this with the assistance of others or specific instructions. E、I am a novice. I have not done this yet or I am learning.
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