Refer to the exhibit. Look at the command output. What can you use to prevent this behavior？ （） [" UDLD （UniDirectional Link Detection）"," spanning-tree loopguard"," VTP mode transparent"," switchport mode desirable"]
商品检验
做人最重要的应该是（） ["以德为先，做有德之人","以才为现，做有才之人","以权为先，做有权之人","以钱为先，做有钱之人"]
下图表明在玻璃容器中溶液培养下幼苗的生长，且光只从右手一侧照射。在茎间可看到生长发生弯曲，这叫做：（） ["感光性","向光性","趋光性","光形态建成","光周期现象"]
后火
体育组织
