桑树、垂柳、银杏均为雌雄同株的植物。

（）雌雄虫体均为寄生虫，有背甲，不具卵囊

（）雌雄虫体均为寄生虫，无背甲，不具卵囊

天南星属和半夏属植物均为单性花，雌雄同株。

什么叫雌雄同株？雌雄异株？杂性同株？

油桐均为雌雄异株单性花，故栽培时需要配置授粉树。

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.

当自花授粉植物的异花传粉率达到（）范围时，叫做常异花授粉植物。

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。