【判断题】买麻藤纲植物的大孢子叶成为盖被,盖被发育成假种皮。
【单选题】______ in the mountains for a week, the two students were finally saved by the local police. [ ]
【判断题】买麻藤纲植物的大孢子叶称为盖被,盖被发育成假种皮。( )
【判断题】买麻藤纲植物的大孢子叶成为盖被,盖被发育成假种皮。
【单选题】对称三相负载作星形连接时,线电压与对应相电压的相位差是()
【简答题】Police have asked graphologists to help them solve crimes, and businesses have used handwriting samples to choose employees.(翻译)