YJl9卷烟机显示的常见故障内容有:跑条、气压过低、()、卷烟纸断裂、卷烟纸储量不足、卷烟纸搭接、喇叭嘴故障等。 ["喇叭嘴弹簧片断裂","PA油压过低","PA气压过低","计量辊阻塞"]
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旋回性能指标中的旋回初径基准值为(L为船长):(). ["<3.0L","<4.0L","<5.0L","<6.0L"]
非政府组织的基本特点有() ["公共性","民间性","非营利性","自治"]
离子交换树脂的溶胀性