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【单选题】
投资者预计标的证券短期内不会大幅上涨，希望通过交易期权增加收益 , 这时投资者可以选择的策略是A.
做多股票看跌期权
B.
做多股票看涨期权
C.
做空股票看涨期权
D.
做空股票看跌期权
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举一反三
【单选题】In his essay 'The Parable of the Tapeworm,' Mario Vargas Llosa argues that at the heart of the writer's will to write is rebellion, a 'rejection and criticism of life as it is.' Moreover, he speculate...
A.
both of them are portable.
B.
both of them are difficult to govern.
C.
both of them can be used in rebellion.
D.
both are them are highly influential.
【单选题】稀释与接种法测定水样中BOD5时，对稀释水的要求错误的是( )
A.
控制水温(20±1)℃
B.
使用前加入一定量四种盐溶液混匀
C.
溶解氧达到饱和
D.
稀释水的pH值应在6.5-7.5之间
E.
稀释水BOD5的测定结果不超过0.5mg/L
【简答题】稀释与接种法测定水中BOD5时，如水样为含难降解物质的工业废水，可使用（）的稀释水进行稀释。
【单选题】In his essay 'The Parable of the Tapeworm,' Mario Vargas Llosa argues that at the heart of the writer's will to write is rebellion, a 'rejection and criticism of life as it is.' Moreover, he speculate...
A.
both of them are portable.
B.
both of them are difficult to govern.
C.
both of them can be used in rebellion.
D.
both are them are highly influential.
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