楼梯一般分为（）平台，栏杆，扶手，三部分组成。

(单选题)楼梯栏杆扶手的高度一般为(    ),供儿童使用的楼梯应在(    )高度增设扶手.(本题2.0分)

楼梯一般由楼梯段、休息平台、楼梯栏杆或栏板及扶手组成。（）

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

楼梯一般由梯段、平台和栏杆扶手三部分组成。

楼梯一般由梯段、平台和栏杆扶手三部分组成。

楼梯主要由楼梯梯段、（）及栏杆扶手三部分组成。