The projection on a shaft designed to change circular motion into up and down or back and fore motion is called （）. ["wheel","crankshaft","running gear","cam"]
A position that is obtained by using two or more intersecting lines of position taken at nearly the same time，is a(n) （）. ["fix","running fix","estimated position","dead-reckoning positio"]
招商银行循环机可以受理的业务包括（）。 ["异地一卡通人民币存现","美元活期存现","人民币整存整取开户","通知存款存入","他行卡片存现","两地一卡通人民币取现"]
A position that is obtained by applying estimated current and wind to your vessel’s course and speed is a(n) （）. ["estimated position","dead reckoning position","fix","None of the above"]
太阳进入海洋被吸收的原因是（）、（）、和（）。
海水的特性是由（）共同决定。
