以下填料中不属于絮类的是() ["棉絮","泡沫塑料","丝绵","羽绒"]
相对水深()是冰期垂线一点法规定的测速点位置。 ["A、0.5","B、0.6","C、0.7","D、0.8"]
用燃烧法鉴别纤维,靠近火焰熔缩,接近火焰熔融冒烟缓慢燃烧,离开火焰继续燃烧有时自灭,燃烧时有甜味,残留物呈硬而黑圆珠状,该纤维是() ["麻","丝","粘胶纤维","涤纶"]
纱线染色后再织造的织物称() ["色织布","染色布","印花布","提花布"]
相对水深()不是畅流期垂线五点法规定的测速点位置。 ["A、0.0","B、0.6","C、0.8","D、0.5"]
室内放装AP采用的功率为:()mw。