[名词解释] 异（同）向絮凝

The （）were the original inhabitants in America. ["blacks","Indians","PuertoRica"] 选出以下各项中正确的选项（） ["东方丧礼插花以白色与蓝色花材为主","西方丧礼插花以红色与粉色花材为主","东方丧礼插花以黄色与红色花材为主","西方丧礼插花以粉色与橙色花材为主"] 负水头现象 锅炉汽包水位计指示的水位与汽包内实际水位一致吗？ 助凝剂 异（同）向絮凝