【简答题】Correct the errors in the following sentences.
【单选题】3-甲基丁-1-烯与水加成制备醇,主产物为( )
【单选题】野外采集的地震记录中,每一个地震道由 ( ) 和 ( ) 两部分组成 。
【单选题】According to the policy, only________ of the bank can arrange for a loan. But if there is a regular old client agrees to act as a ________ you may apply for a loan.
【单选题】3-甲基丁-1-炔 与 过量的HBr反应,产物是( )。
【单选题】野外采集的地震记录中,每一个地震道由 和 两部分组成 。
【简答题】Correct the errors in the following sentences.
【简答题】A Chinese export company made a transaction of apples with a foreign company. It’s stipulated “second-class apples” in the quality terms on the contract of sales and letter of credit. However, they fo...
【简答题】我们身处在自然环境中,一年接受的宇宙射线及其它天然辐射照射量约为3 1 00微西弗(1西弗等于1000毫西弗,1毫西弗等于1000微西弗),用科学记数法可表示为( ) A. 西弗 8. 西弗 C. 西弗 D. 西弗