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A

抹香鲸:头部巨大,下颌较小,仅下颌有牙齿。主要食乌贼。体长可达18米,体重超过50吨,是体型最大的齿鲸,头部可占身体的1/3,无背鳍;潜水能力极强,是潜水最深,潜水时间最长的哺乳动物。

相关专题: 抹香鲸  

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相关问题推荐

从抹香鲸体内提炼出的一种香料是( )。

A.百里香

B.沉水香

C.麝香

D.龙涎香

大王乌贼有二十多米长,是海中最凶猛的掠食者,但是它遇到克星就完蛋,请问,下列哪种生物是它的克星?()

A、大章鱼

B、抹香鲸

C、鲨鱼

D、剑鱼

共用题干
The Greatest Mystery of Whales
The whale is a warm-blooded,air-breathing animal,giving birth to its young alive,sucking them-and, like all mammals,originated on land.There are many______(51)of this.Its front flippers(鳍状肢), used for steering and stability,are traces of feet.
Immense strength is______(52)into the great body of the big whales,and in fact most of a whale's body is one gigantic muscle.The blue whale's pulling strength has been estimated______(53) 400 horsepower.One specimen was reported to have towed(拖)a whaling vessel for seven hours at the ______(54)of eight knot(节).
An angry whale will______(55).A famous example of this was the fate of Whaler Essex, ______(56)was sunk off the coast of South America early in the last century.More recently,steel ships have______( 57 ) their plates buckled(使弯曲)in the same way.Sperm whales(抹香鲸)were known to seize the old-time whaleboats in their jaws and crush them.
The greatest______(58)of whales is their diving ability.The sperm whale dives to the bottom for his______( 59 ) food , the octopus(章鱼).In that search he is known to go as far down as 3 , 200 feet, where the______(60)is 1,400 pounds to a square inch.Doing so he will______(61) underwater as long as one hour.Two special skills are involved in this storing up enough______(62) (all whales are air-breathed)and tolerating thern great change in pressure.Just how he does it scientists have not______(63).It is believed that some of the oxygen is stored in a special ______(64)of blood vessels,rather than just held in the lungs.And it is believed that a special kind of oi1 in his head is some sort of a compensating mechanism that______(65)adjusts the internal pressure of his body.But since you can't bring a live whale into the laboratory for study,no one knows just how these things work.
61._________
A:set
B:become
C:remain
D:rest
题目抹香鲸是体型最大的齿鲸。由于潜水能力极强,抹香鲸也是潜水最深、潜水时间最长的哺乳动物。只有在有大量乌贼存活且不结冰的海域,才会有抹香鲸存活。阿拉弗拉海域没有抹香鲸。根据以上断定,可得出以下哪项结论?(  )I.阿拉弗拉海域或者没有大量乌贼存活,或者是结冰的海域II.只有在不结冰的海域里,乌贼才能存活III.阿拉弗拉海域没有齿鲸
A:仅I
B:仅II
C:仅III
D:I,II和III都得不出

海洋中有一种鲸体长可达30米,体重超过150吨,请问,它最可能是下列的哪种鲸?()

A、抹香鲸

B、虎鲸

C、蓝鲸

D、灰鲸

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