IMO船舶操纵性衡准中要求全速倒车冲程指标的基准值为(L为船长):(). ["<16L","<15L","<14L","<13L"]
下列()不是标记的有效属性? ["A、align","B、width","C、valign","D、background"]
IMO船舶操纵性衡准中要求初始回转性能(操10°舵角,航向变化10°时船舶的前进距离)指标的基准值为(L为船长):(). ["<2.5L","<3.5L","<4.5L","<5.5L"]
非政府组织的基本特点有() ["公共性","民间性","非营利性","自治"]
YJ17卷接机组控制禁止故障的显示内容有:风机和料斗未接通、()、护罩门联锁开关断开。 ["加热器温度超限","胶缸未准备","空气供给","气压过低"]
大阻力配水系统