通常原核生物细胞里只有（）染色体，且DNA含量（）真核生物。

原核生物细胞结构和真核生物细胞结构比较，不符合原核生物特点的是

同真核生物相比，原核生物没有的细胞结构是（）。

下列有关原核细胞和真核细胞共性的描述中,错误的是

真核与原核细胞蛋白质合成的相同点是:( )

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。