根据下列选项，回答 46～50 题。
1 is the business of prividing employment for a vessel and arranging suitable sea transport for a variety of commodities． 2 chartering means that the ship owner promises to carry on board a specific ship a particular cargo for a single voyage from one or more loading ports to one or more discharging ports．Under a 3 charter the ship owner retains the operational control of the vessel and is responsible for all the operating expenses such as port charges，bunkers，taxes，and so on． 4 chartering means that the ship owner provides a designated manned ship to the charterer，and the charterer employs the ship for a specific period against payment of hire． 5 chartering ordinarily means that vessel is put at the disposal of the charterer for a long period of employment without any crew．
第 46 题 请在1处填上正确答案