A radio determination system based on the comparison of reference signals with radio signals reflected,or retransmitted from the position to be determined,is（）.

The height of a VHF radio antenna is more important than the power output wattage of the radio because（）.

（）an order for one thousand tons or more we grant a special discount of 10%.

The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.

One method of reducing the length of radio transmissions without distorting the meaning of your words is by using（）.

Whenever visible traces of oil are observed on or below the surface of the water in the immediate vicinity of ship or its wake，Governments of Parties to the Convention should，to the extent they are reasonably able to do so，promptly（）the facts bearing on the issue of whether there has been a violation of the provisions of this Regulation or Regulation 10 of this Annex of MARPOL 73/78.

The master may bind the Shipowner or Charterer（）doing such things as are necessary on the part of the one or of the other to carry out the contract.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

（）means a technique using digital codes which enables a radio station to establish contact with, and transfer information to another station or group of stations and complying with the relevant recommendations of the CCIR.

The granting of radio pratique （）the vessel only as far as the Port Officer of Health is concerned．

海关对进口货物凭出入境检验检疫机构签发的（）单据办理海关通关手续。