The pilot needs the ship to go forward very slowly. The order should be _____.
A.“Slow ahead”
B.“Dead slow ahead”
C.“Astern”
D.“Dead slow astern”
()that happen,what()we do?A、If…shallB、Suppose…shallC、Should…wouldD、Had…should
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上行专用物理信道的所有组成部分,以下哪个选项最完整()A、data、pilot、TFCIB、data、pilot、TFCI、TPCC、data、pilot、TFCI、TPC、FBID、pilot、TFCI、TPC、FBI
若vehicle=['train','bus','car','ship'],则vehicle[1]是什么?A.trainB.busC.carD.ship
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the ______.A.distress positionB.spoken words “Mayday, Mayday, Mayday”C.ship’s nameD.ship’s call letters
【单选题】在HTML文档对象模型中, history对象的（)用于加载历史列表中的下一个URL页面（)A．next()B．back()C．forward()D．go(-1)
6、在history对象中不能实现网页前进效果的方法是（）。A．forward()B．go(1)C．back()D．go(2)
在history对象中不能实现网页前进效果的方法是（）。A．forward()B．go(1)C．back()D．location
