肿瘤细胞对于抗恶性肿瘤药物的耐药性可以分为哪几类？发生多药耐药性的可能机制是什么？

破坏DNA结构和功能的抗恶性肿瘤药是

破坏DNA结构和功能的抗恶性肿瘤药是

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。

灰黄霉素：典型抗浅表真菌药。对（）疗效显著。

抗恶性肿瘤药的常见不良反应不包括

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。