α-螺旋(α-helix)

一个α-螺旋片段含有180个氨基酸残基，该片段中有（）圈螺旋？该α-螺旋片段的轴长为（）.

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

α-NAE染色呈强阳性的细胞是（）。

α-NAE染色呈强阳性的细胞是

α－醋酸萘酚酯酶（α－NAE）染色呈阴性的是（）

α螺旋-转角-α螺旋基元

helix-turn-helix motif，HTH (α螺旋-转角-α螺旋基元)

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。