【单选题】_ _____ is the engineering structures made of shaped steel and steel plate.
【多选题】下面有关通过协方差反映投资项目之间收益率变动关系的表述错误的是
A.
协方差的绝对值越小,表示这两种资产收益率的关系越疏远
B.
协方差的值为正,表示这两种资产收益率的关系越密切
C.
协方差的值为负,表示这两种资产收益率的关系越疏远
D.
无论协方差的值为正或负,其绝对值越大,表示这两种资产收益率的关系越密切
【单选题】Assume, for Canada, that the domestic price of steel without international trade is higher than the world price of steel. This suggests that, in the production of steel,________.
A.
Canada has a comparative advantage over other countries and Canada will import steel.
B.
Canada has a comparative advantage over other countries and Canada will export steel.
C.
other countries have a comparative advantage over Canada and Canada will import steel.
D.
other countries have a comparative advantage over Canada and Canada will export steel.
【多选题】下面有关通过协方差反映投资项目之间收益率变动关系的错误表述为( )。
A.
协方差的绝对值越小,表示这两种资产收益率的关系越疏远
B.
协方差的值为正,表示这两种资产收益率的关系越密切
C.
协方差的值为负,表示这两种资产收益率的关系越疏远
D.
无论协方差的值为正或负,其绝对值越大,表示这两种资产收益率的关系越密切
【单选题】The imposition of quotas limiting imported steel will not help the big American steel mills. In fact, the quotas will help 'mini-mills' flourish in the United States. Those small domestic mills will t...
A.
Quality rather than price is a major factor in determining the type of steel to be used for a particular application.
B.
Foreign steel mills have long produced grades of steel comparable in quality to the steel produced by the big American mills.
C.
American quotas on imported goods have often induced other countries to impose similar quotas on American goods.
D.
Domestic 'mini-mills' consistently produce better grades of steel than do the big American mills.
E.
Domestic 'mini-mills' produce low-volume, specialized types of steels that are not produced by the big American steel mills.
【简答题】Diamandis thinks American reliance on oil is bad for the environment and for ______.
【判断题】所有者权益就是企业所有者投入的资产,也称净资产。
【多选题】下面有关通过协方差反映投资项目之间收益率变动关系的错误表述为()
A.
协方差的值越小,表示这两种资产收益率的关系越疏远
B.
协方差的值为正,表示这两种资产收益率的关系越密切
C.
协方差的值为负,表示这两种资产收益率的关系越疏远
D.
无论协方差的值为正或负,其绝对值越大,表示这两种资产收益率的关系越密切