编写一个程序计算圆面积，输入两个参数，一个参数为输入圆的半径长，另一个参数用来返回圆面积。

若有一个函数原型为“double *function（）”，则它的返回值类型为（）。

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

●设AND、OR和NOT分别表示按位与、按位或和按位求反运算，且X=10011011，Y=01111010，Z=11101000，则(NOT(X) AND Y)= (9) ， (Y OR NOT(Z))= (10) 。10011011011110101110100001100000(10)

FX2N 系列可编程序控制器输入常开点用( )指令。 A、LD B、LDI C、OR D、ORI

设x=4,y=8,z=7，以下表达式的值x>y Or z是 （ ）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。