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间隔制动 spacing braking
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考题
以下有关［间隔工具（Spacing）］的描述正确的是（）？A、使用［间隔工具（Spacing）］进行复制应用后，如果对结果不满意，可以再次打开［间隔工具（Spacing）］对话框进行调节B、使用［间隔工具（Spacing）］所拾取的路径可以是包含多个样条曲线的合成图形C、［间隔工具（Spacing）］复制得到的物体必然存在着关联，即对其中任何一个物体进行修改，都会影响到其它物体D、使用［间隔工具（Spacing）］进行复制时，一定会在路径的起始点上产生物体
考题
For a DWDM system, the wavelength selection and frequency spacing comply with（），recommendation while that of a CWDM system comply with the requirements of （）。
考题
单选题In preparing a cargo space for receipt of a shipment of bagged cargo，which instruction for laying dunnage should be followed? （）A
Use either 1 or 2 tiers of dunnage，spacing the pieces in each tier a foot apart，and lay pieces in the bottom tier diagonally to the ship's sideB
Use 1 tier of dunnage，laying the pieces tightly together to form a solid floor over the steel deckC
Use 2 tiers of dunnage，spacing the pieces in the bottom tier about a foot apart and the pieces in the top tier 6 inches apartD
Use 2 tiers of dunnage，spacing the pieces in the bottom tier about a foot apart and the pieces in the top tier together
考题
单选题An effective braking system for windlasses on rigs in deep water is a(n)（）.A
larger chain stopperB
disc backstopping brakeC
hydraulic clutchD
electrical regenerative braking system
考题
单选题Winch gears must be maintained in proper alignment to prevent （）.A
overheating of the lube oilB
over-speeding of the motorC
wear on the braking systemD
damage to the teeth
考题
单选题What is the principle behind dynamic braking as used on an anchor windlass?（）A
Electrical loadingB
Mechanical distributionC
Compressibility of airD
Mechanical friction
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