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【单选题】
对于二冲程柴油机主机遥控系统而言，换向时必须要满足的最基本的逻辑条件包括( )。①与凸轮轴位置不一致；②排气阀顶升机构抬起；③已经停油；④主机转速低于换向转速；⑤与转向不一致；⑥主机已经停车A.
①②③
B.
①③
C.
①④⑤⑥
D.
②③⑤⑥
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【简答题】按照旅游的目的划分,可把旅游者分为观光旅游者、度假旅游者和 三大基本类型。
【多选题】Accounting assumption includes______
A.
going-concern assumption
B.
monetary-unit assumption
C.
business entity assumption
D.
time period assumption
【单选题】According to the passage, a questionable assumption of the conventional theory about the operation of financial markets is that______
A.
creditworthiness as determiend by lenders is a factor determining market access
B.
market structure and market dynamics depend on income distribution
C.
a scarcity of alternative sources of funds would result from taking socioeconomic factors into consideration
D.
those who engage in financial-market transactions are perfectly well informed about the market
E.
inequalities in income distribution are increased by the functioning of the financial market
【单选题】If the assumption about the delay of a new Ice Age is correct, ______ .
A.
the best way to overcome the cooling effect would be to burn more fuels
B.
ice would soon cover the northern hemisphere
C.
the increased levels of carbon dioxide in the atmosphere could warm up the earth even more quickly
D.
the greenhouse effect could work to the advantage of the earth
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