【单选题】【消耗次数:1】
We can assign the work to ____is reliable.
whose
whom
whoever
whomever
参考答案:
复制
纠错
相关题目
【单选题】 None of us can work out the puzzle, _____ we?
①  can
②  can’ t
③  do
④  don’ t
【单选题】 If we work with a strong will, we can overcome any difficulty, ____ great it is.
①  what
②  how
③  however
④  whatever
【单选题】 17.I dont think we can finish all the work before Friday, ____we?
①  shall
②  will
③  can
④  do
【单选题】 We ______ your name and address _____ Chinese Chamber of Commerce, through whom we learned that you are the main exporter of stainless steel products.
①  owe, from
②  owe, to
③  owe, with
④  owe, out of
【单选题】 The?( )?from?school?to?work?can be?difficult
①  transformation
②  transport
③  transition
④  transmission
【单选题】 They can’t leave until they _________ their work .
①  did
②  are doing
③  have done
④  his done
【单选题】 They can’t leave until they _______ their work .
①  did
②  are doing
③  have done
④  his done
【单选题】 Now that we’ve ____, can we come to a decision?
①  thought over
②  thought of
③  thought through
④  thought about
【单选题】 They can’t leave until they ___ their work.
①  did
②  are doing
③  have done
④  has done
【单选题】 _________ we’ve no money, we can’t buy it.
①  Since
②  Because of
③  Therefore
④  Why
随机题目
【多选题】 下列哪些属于红外光谱常用术语( )
①  基频峰
②  特征峰
③  合频峰
④  肩峰
⑤  指纹区
【多选题】 用于紫外-可见分光光度法分析的仪器主要元件包括
①  过滤器
②  吸收池
③  钨灯
④  单色器
【多选题】 通常情况下,在分光光度法中,( )是导致偏离朗伯-比尔定律的因素
①  吸光物质浓度过高
②  单色光不纯
③  待测溶液中的化学反应
④  介质的不均匀
【多选题】 光吸收定律应用条件是
①  稀溶液(C<0.01mol/L)
②  入射光为单色光
③  均匀介质
④  入射光只能是可见光
【单选题】 对沸点较高、黏度较低、吸收很强的液体样品,可以将液体夹于两块盐片之间,通过毛细作用吸附住液层形成液膜,然后置于样品架上,测定光谱,此法称为( )
①  液体池法
②  涂片法
③  液膜法
④  压片法
【单选题】 红外光谱的谱带较多, 能较方便地对单组分或多组分进行定量分析, 但红外光谱法的灵敏度较低,尚不适于( )的测定。
①  常量组分
②  微量组分
③  气体试样
④  固体和液体试样
【单选题】 空心阴极灯内充气体是( )
①  大量的空气
②  大量的氖或氮等惰性气体
③  少量的空气
④  低压的氖或氩等惰性气体
【单选题】 空心阴极灯的主要操作参数是
①  灯电流
②  灯电压
③  阴极温度
④  内充气体的压力
【单选题】 某溶液用2cm吸收池测量时,T=60%,若改用1cm吸收池,T和A是
①  77%,0.111
②  58%,0.236
③  30%,0.523
④  60%,0.222
【单选题】 原子吸收的定量方法——标准加入法,消除了下列哪种干扰?
①  分子吸收
②  背景吸收
③  光散射
④  基体效应