直方图仅适合用于显示连续型分组数据。

用哪种图来表示构成比资料？（）

万方数据库使用布尔逻辑算符anD./or/not.其中A.anD.B表示（）。

用一组测试题去测定某种教育现象的实际情境，从而收集资料数据进行研究的方法是（）。

下列哪种统计图适用于连续性资料？（）

下列哪种图主要用于连续型的数据资料（）

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

switch 语句不能用于下列哪种数据类型？（　　）