皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【简答题】
(二) 到底在什么样的条件下才能形成“可燃冰”?专家认为,形成“可燃冰”最少要满足三方面条件。首先是温度,海底的温度在2°C至4°C时,适合“可燃冰”的形成,高于20°C则分解。其次是压力,在0°C时,只需要30个大气压就可以形成“可燃冰”。如果在海底,海深每增加10米,压力就增大1个大气压。因此海深300米就可达到30个大气压。,压力越大,“可燃冰”就越稳定。第三是气源,海底古生物尸体的沉淀物,被细菌分解会产生甲烷,或者是天然气在地球深处产生并不断进入地壳。在上述三个条件都具备的情况下,天然气可在介质的空隙中和水生成“可燃冰”。甲烷分子被若干个水分子形成的笼型结构接纳,生成笼型固体结晶水合物,分散在海底岩层的空隙中。在常温常压下,“可燃冰”分解为甲烷和水。最有可能形成“可燃冰”的区域一个是高纬度的冻土层。如美国的阿拉斯加、俄罗斯的西伯利亚都已有发现,而且俄国已经开采了近20年。另一个是海底大陆架斜坡。如美国和日本的近海海域,加勒比海沿岸及我国南海和东海海底均有储藏,估计我国黄海海域和青藏高原的冻土带也有储藏。近海海域,加勒比海沿岸及我国南海和东海海底均有储藏,估计我国黄海海域和青藏高原的冻土带也有储藏。二者之中,海底的“可燃冰”储量较大。 (选自《“可燃冰”将解千年能源忧?》
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】下面那种说法是错误的（）
A.
等高线在任何地方都不会相交
B.
等高线一定是闭合的连续曲线
C.
同一等高线上的点的高程相等
D.
等高线与山脊线、山谷线正交
查看完整题目与答案
【简答题】Banks____________(通常优先考虑) large businesses when deciding on loans.
查看完整题目与答案
【单选题】People should ______ when deciding wheher to have a negative rich environment.
A.
note their own reactions
B.
move to a healthier area
C.
observe domestic animals
D.
watch how wealthy people behave
查看完整题目与答案
【单选题】Architects are hopeless when it comes to deciding whether the public will view their designs as marvels or monstrosities, according to a study by Canadian psychologists. They say designers should go b...
A.
Architects have a dark future in designing marvelous buildings.
B.
Architects don't care about how ordinary people view their designs.
C.
It is very difficult for architects to please the general public.
D.
Architects don't know much about the public tastes for buildings.
查看完整题目与答案
【单选题】When deciding whether for the wife to work out or not, the couple have to consider
A.
their economic situation
B.
the emotional needs of the family
C.
the confusing and conflicting feelings
D.
the mother's feelings about working
查看完整题目与答案
【单选题】When deciding the composition of the engineering watch, which may include appropriately qualified ratings, following criteria shall be taken into accountⅠ.the type of shipⅡ.the type and condition of t...
A.
Ⅰ+Ⅱ
B.
Ⅱ+Ⅲ
C.
Ⅱ+Ⅲ+Ⅳ
D.
Ⅰ+Ⅱ+Ⅲ+Ⅳ
查看完整题目与答案
【单选题】Banks normally give______to large businesses when deciding on loans.
A.
misery
B.
sanity
C.
priority
D.
saunter
查看完整题目与答案
【单选题】When deciding the composition of the engineering watch, which may include____ appropriately, many factors shall be taken into account.
A.
satisfied engineers
B.
qualified ratings
C.
satisfied chief engineer
D.
qualified chief' engineer
查看完整题目与答案
【简答题】Enterprises have more choices when deciding where to broadcast ads.
查看完整题目与答案
【简答题】(c) Briefly describe five factors to be taken into account when deciding whether to use recruitment consultants.(5 marks)
查看完整题目与答案
相关题目：
【单选题】下面那种说法是错误的（）
A.
等高线在任何地方都不会相交
B.
等高线一定是闭合的连续曲线
C.
同一等高线上的点的高程相等
D.
等高线与山脊线、山谷线正交
查看完整题目与答案
【简答题】Banks____________(通常优先考虑) large businesses when deciding on loans.
查看完整题目与答案
【单选题】People should ______ when deciding wheher to have a negative rich environment.
A.
note their own reactions
B.
move to a healthier area
C.
observe domestic animals
D.
watch how wealthy people behave
查看完整题目与答案
【单选题】Architects are hopeless when it comes to deciding whether the public will view their designs as marvels or monstrosities, according to a study by Canadian psychologists. They say designers should go b...
A.
Architects have a dark future in designing marvelous buildings.
B.
Architects don't care about how ordinary people view their designs.
C.
It is very difficult for architects to please the general public.
D.
Architects don't know much about the public tastes for buildings.
查看完整题目与答案
【单选题】When deciding whether for the wife to work out or not, the couple have to consider
A.
their economic situation
B.
the emotional needs of the family
C.
the confusing and conflicting feelings
D.
the mother's feelings about working
查看完整题目与答案
【单选题】When deciding the composition of the engineering watch, which may include appropriately qualified ratings, following criteria shall be taken into accountⅠ.the type of shipⅡ.the type and condition of t...
A.
Ⅰ+Ⅱ
B.
Ⅱ+Ⅲ
C.
Ⅱ+Ⅲ+Ⅳ
D.
Ⅰ+Ⅱ+Ⅲ+Ⅳ
查看完整题目与答案
【单选题】Banks normally give______to large businesses when deciding on loans.
A.
misery
B.
sanity
C.
priority
D.
saunter
查看完整题目与答案
【单选题】When deciding the composition of the engineering watch, which may include____ appropriately, many factors shall be taken into account.
A.
satisfied engineers
B.
qualified ratings
C.
satisfied chief engineer
D.
qualified chief' engineer
查看完整题目与答案
【简答题】Enterprises have more choices when deciding where to broadcast ads.
查看完整题目与答案
【简答题】(c) Briefly describe five factors to be taken into account when deciding whether to use recruitment consultants.(5 marks)
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题