梗阻肥厚性心肌病时，下列哪项可使杂音减弱（）

梗阻肥厚性心肌病时，下列哪项可使杂音减弱

下列可使肥厚性梗阻型心肌病的胸骨左缘收缩期杂音减弱的是

下列哪一种情况可使肥厚性梗阻型心肌病的胸骨左缘收缩期杂音减弱（）。

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。

下列哪项因素不会引起心肌收缩性减弱（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。