【单选题】The children are looking at a large, hairy( 毛的 ) ape at the zoo . Ape is ____.
【单选题】From the passage, we can learn that the reason why the ape could not get the banana if the stick was behind him while the banana was in front of him is______.
A.
that the ape was unable to find where the stick was
B.
that the ape forgot about the banana when it turned around to find the stick
C.
that the ape didn't see the banana and the stick in the meanwhile and it couldn't remember the banana long enough to get the stick and use it
D.
that the ape was not clever enough to catch sight of the banana and the stick at the same time
【单选题】关于“中航油事件”案例,下列说法不正确的是( )。
A.
中航油从2002年开始从事石油期货交易且看跌国际油价,基于此观点,中航油从2003年下半年开始在OTC市场与多家银行签订了一种名为“航煤限价保顶期权”的看跌期权合约
B.
关于“航煤限价保顶期权”合约,新加坡OTC市场规定在合约到期后不进行实物交割,而是以现金结算
C.
中航油(新加坡)的相关操作既违反了国务院在1999年发布的《期货交易管理暂行条例》的有关规定,也违反了安永会计师事务所为其制定的《风险管理手册》中的规定
【判断题】氨基酸-tRNA连接酶只催化一种氨基酸与其受体tRNA的连接反应,属于 绝对专一性。
【单选题】精氨酸可以在一氧化氮合酶 (nitric oxide synthase, NOS) 催化下生成一氧化氮 (nitric oxide,NO) , NO 的受体属于( )