试题与答案

(1)有机物裂解 (2)天然气形成 (3)细菌耗氧(4)残骸沉积 (5)浮游生物

题型:单项选择题

题目:

(1)有机物裂解 (2)天然气形成 (3)细菌耗氧(4)残骸沉积 (5)浮游生物死亡正确选项为( )

A.1—2—3—5—4

B.5—4—1—2—3

C.3—1—5—4—2

D.5—4—3—1—2

答案:

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参考答案:B解析: 目前全世界公开宣称拥有核潜艇的国家有6个,分别为美国、俄罗斯、中国、英国、法国、印度。其中美国和俄罗斯拥有的核潜艇最多。

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