LR法是自顶向下语法分析方法。

编译程序中语法分析器接受以(29)为单位的输入，并产生有关信息供以后各阶段使用。(30)、LR分析法和(31)是几种常见的语法分析技术，其中(30)和LR分析法属于自下而上分析法，而(31)属于自上而下分析法。LR分析法有SLR(1)、LR(0)、LR(1)和LALR(1)4种，其中(32)的分析能力最强，(33)的分析能力最弱。

LR法是自顶向下语法分析方法。

LR方法可以分析含有左递归的文法。

LR（0）分析法是一种规范规约法。

可以在（）阶段采用Make-or-buy决策分析。

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

假如某因素与某病关系的病例对照研究结果的OR值为0.3（P＜0.01），最可能的解释是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。