题解决型是使用计算机教学形式为学习者提供一种特定的（），促使他们对应用知识、分析问题和（）解决问题的学习。 ["学习气氛；有效的","学习环境；创造性","教学模式；高效的","教学氛围；针对性"]
船队的定义、优点、形式
根据拼写规则，下列音节拼写有错误的是（）。 ["xiwang","guenshuei","yuanwang","xuanchua"]
Which two of these multicast deployments are most susceptible to attacks from unknown sources?（） ["ASM","BiDirPIM","PIM-SMRP","RP-Switchover","SourceSpecificMulticast"]
渗透交代作用：
说明下面字的意义。颇
