Can I （）a message or would you like to ring him on his mobile phone? 

法学的研究对象是(      )。

 ______ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

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（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

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.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

在记账凭证账务处理程序下，其记账凭证必须采用收款凭证、付款凭证和转账凭证三种格式。    （　　）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

对于违法票据承兑、付款、保证罪的量刑表述下列选项中正确的有（    ）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。