logo - 刷刷题
下载APP
【简答题】

【名词解释】南极磷虾资源

题目标签:磷虾南极
举报
参考答案:
参考解析:
欢迎编辑补充
.
刷刷题刷刷变学霸
举一反三

【单选题】我国在南极建立的科考站是:

A.
长城站和和平站
B.
中山站和东方站
C.
长城站和东方站
D.
长城站和中山站

【单选题】The promise of finding long-term technological solutions to the problem of world food shortages seems difficult to fulfill. Many innovations that were once heavily supported and publicized, such as fi...

A.
too much publicity can harm the chances for the success of a new food innovation
B.
innovations that produce culturally acceptable crops will generally be successful
C.
a food-product innovation can be technically feasible and still not be economically feasible
D.
it is difficult to decide whether a food-product innovation has actually been a success

【单选题】格陵兰岛冰盖是仅次于南极冰盖的世界第二大冰盖,冰层几乎覆盖格陵兰岛80%的表面积,在过去25年内,其冰层融化速度增长40%。通常来说,气温上升才会导致冰层融化和海平面上升,但格陵兰岛在近25年内气温没有非常明显的变化。研究发现,从该岛北部的干旱地带吹来超多矿尘到格陵兰岛冰盖上,有学者认为这与冰层融化有直接关系。以下哪项如果为真,最能支持上述结论?

A.
研究人员在卫星图像上发现,格陵兰岛冰盖上被矿尘覆盖的区域长约400km,最宽处达100km,且面积逐渐增大
B.
矿尘来自羟基磷灰石,这种矿物由地表露头岩石风化而来,又被北风吹散,形成的矿尘比较大
C.
矿尘中含磷,使冰层表面产生藻华、表面颜色变暗、反射率降低、吸收更多阳光,导致冰层融化加快
D.
研究人员曾证实,矿尘以及微生物较多的冰层融化速度明显加快