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【简答题】
流化催化裂化工艺(以下简称 FCC )能生产哪些重要的基础 化工原料 ?
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举一反三
【单选题】The Heckscher-Ohlin modelpredicts all of the following except:
A.
which country will export which product.
B.
which factor of production within each country will gain from trade.
C.
the volume of trade.
D.
that wages will tend tobecome equal in both trading countries.
E.
None of the above
【简答题】What is the Heckscher-Ohlin theorem?
【单选题】According to the Heckscher-Ohlin model
A.
only the country with the more advanced technology gains from trade.
B.
the gainers from trade could compensate the losers and still retain gains.
C.
everyone gains from trade.
D.
the scarce factor gains from trade and the abundant factor loses.
E.
a country gains from trade if its exports have a high value added.
【单选题】An implication of the Heckscher-Ohlin- theorem is that
A.
if two countries have identical tastes, then no trade will occur between them.
B.
the relative price of a country's scarce factor of production will rise when the country is opened to trade.
C.
income distribution in a country does not change when a country is opened to trade.
D.
two countries with identical tastes can still have a basis for trade if factor endowments of the countries differ and if factor intensities of the commodities differ.
【单选题】关于围生期心肌病的说法错误的是
A.
多发生于妊娠最后3个月至产后6个月
B.
属于肥厚型心肌病
C.
发生率1：1300～1：4000，死亡率15％～60％
D.
临床表现主要为左心衰竭，继之右心衰竭
E.
治疗主要为休息、利尿、强心、扩血管等，有血管栓塞者适当应用抗凝剂
【单选题】运动神经元轴突末稍释放的乙酰胆碱与受体结合后,使终板膜上的
A.
化学敏感性离子通道开放
B.
电压门控 Ca2+通道开放
C.
电压门控 Na+通道开放
D.
电压门控 K+通道开放
E.
电压门控 Na+、K+通道开放
【单选题】鼓式制动器检查期间涂抹润滑脂的位置。选择正确的
A.
制动衬层和制动鼓之间的接触表面
B.
底板和制动蹄之间的接触表面
C.
制动片的表面
D.
制动鼓和后桥法兰之间的接触表面
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