A riverboat is a watercraft designed for inland navigation on lakes, rivers, and artificial waterways. They are generally equipped and outfitted as work boats in one of the carrying trades, for freight or people transport, including luxury units constructed for entertainment enterprises, such as lake or harbour tour boats. As larger water craft, virtually all riverboats are especially designed and constructed, or alternatively, constructed with special-purpose features that optimizes them as riverine or lake service craft, for instance, dredgers, survey boats, fisheries management craft, fireboats and law enforcement patrol craft.
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授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
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標準授權 | XS | 480 x 360 | JPG | 13 | |
標準授權 | S | 800 x 600 | JPG | 15 | |
標準授權 | M | 2000 x 1500 | JPG | 18 | |
標準授權 | L | 2581 x 1936 | JPG | 20 | |
標準授權 | XL | 3264 x 2448 | JPG | 22 | |
標準授權 | MAX | 4000 x 3000 | JPG | 23 | |
標準授權 | TIFF | 4616 x 3462 | TIF | 39 | |
進階授權 | WEL | 4000 x 3000 | JPG | 88 | |
進階授權 | PEL | 4000 x 3000 | JPG | 88 | |
進階授權 | UEL | 4000 x 3000 | JPG | 88 |
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S
M
L
XL
MAX
TIFF
WEL
PEL
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標準授權 | 480 x 360 px | JPG | 13 點 |
標準授權 | 800 x 600 px | JPG | 15 點 |
標準授權 | 2000 x 1500 px | JPG | 18 點 |
標準授權 | 2581 x 1936 px | JPG | 20 點 |
標準授權 | 3264 x 2448 px | JPG | 22 點 |
標準授權 | 4000 x 3000 px | JPG | 23 點 |
標準授權 | 4616 x 3462 px | TIF | 39 點 |
進階授權 | 4000 x 3000 px | JPG | 88 點 |
進階授權 | 4000 x 3000 px | JPG | 88 點 |
進階授權 | 4000 x 3000 px | JPG | 88 點 |