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【单选题】
有机化合物元素定量分析的目的是（）。A.
测定所有元素含量，推断分子组成
B.
计算官能团含量
C.
计算样品中酸性物质的含量
D.
计算样品中碱性物质的含量
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举一反三
【简答题】If one is looked at by a stranger for too long, he tends to feel ________. A) depressed B) uneasy C) curious D) amused
【单选题】How can one feel free and important in his work?
A.
One can feel free if he enjoys what he is doing and one can feel important if what he is doing is valued by society.
B.
One can feel free if he enjoys what he is working and one can feel important if what he is doing is paid by society.
C.
One can feel free if he enjoys what he is playing and one can feel important if what he is doing is compelled by society.
D.
One can feel free if he is interested in what he is doing and one can feel important if what he is doing is valued by his boss.
【简答题】Li Yan was not happy with the second one, what did she feel uncomfortable?
【单选题】Successful people suggest doing what one loves because ______.A.work makes one feel pain##
A.
Successful people suggest doing what one loves because ______. A.work makes one feel pain
B.
one tends to enjoy his work
C.
one gives up his work easily
D.
it takes a lot of time to succeed
【单选题】高某向杨某借款23万5000元,到期后一直没有归还。杨某于2018年10月21日向高某住所地A区法院申请支付令,并向法院提交了高某向杨某借款时出具的借条,要求高某偿还借款23万5000元。在支付令异议期间,杨某觉得支付令不如法院判决更稳妥,于是向自己住所地的B区法院起诉。关于本案,下列说法或做法错误的是:
A.
杨某向A区法院申请支付令
B.
杨某向B区法院起诉
C.
杨某向B区法院起诉，会导致支付令失效
D.
杨某未向发出支付令的法院起诉，不影响支付令的效力
【简答题】联锁的定义是用于控制 及实现 ( ,信号机,道岔之间一种相互制约的关系),用来保证列车在进路上的运行安全。
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