【判断题】蜗杆传动中蜗轮因为尺寸大,所以转速要比蜗杆大的多。
【简答题】Where was the wallet probably lost? It may be lost ______ during the trip.
【单选题】Where was it ______ you lost your wallet?
【单选题】上止血带后应每隔()放松一次,每次放松时间应()
【单选题】I don't know______ he lost his gold watch yesterday.
【简答题】The police asked the (village) ______ where he found the lost child.
【单选题】以下哪种组织结构中分布着触觉和痛觉感受器