已知函数f（x）＝ex－e2x． 　 （1）求f（x）的单调区间，并说明它在各区间的单调性；　 （2）求f（x）在区间[0，3]的最大值和最小值．

已知函数f（x）＝ex－e2x． 　　（1）求f（x）的单调区间，并说明它在各区间的单调性；　　（2）求f（x）在区间[0，3]的最大值和最小值．

已知函数f（x）＝ex－e2x．（1）求f（x）的单调区间，并说明它在各区间的单调性；（2）求f（x）在区间[0，3]的最大值和最小值．

在区间（0，＋∞）上为增函数的是（　　）．

若函数f（x）＝g（x）－cosx在区间上单调递增，则函数g（x）可以是（　　）。

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。