blue rotating light
intermittent flashing amber/yellow light
flashing white light
flashing sidelight
A vessel trawling will display a ______.A.red light over a white lightB.green light over a white lightC.yellow light over a red lightD.white light over a green light
点击查看答案
A buoy marking a wreck will show a(an) ______.A.white light FL (2) and a topmark of 2 black spheresB.occulting green light and may be letteredC.yellow light and will be numberedD.continuous quick white light and may be numbered
以下灯光属性中哪个属性可以影响阴影颜色？（）A、Light FogB、Shadow ColorC、Light GlowD、Light Glow
There is a （）(灯塔).A、lighthouseB、light buoyC、light castleD、lightship
产生彩色投影必须调整下面哪个参数（）A、light的light transmission设为100%B、light的light transmission设为0%C、投影层的阴影层的light transmission设为80%D、接受阴影层的light transmission设为100%
英译中：Automated vehicle identification
单选题A vessel may use any sound or light signals to attract the attention of another vessel as long as（）.A white lights are not usedB red and green lights are not usedC the signal cannot be mistaken for a signal authorized by the RulesD the vessel signals such intentions over the radiotelephone
