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【单选题】
100 mL 6 mol·L - 1 的硫酸跟过量锌粒反应,在一定温度下,为了减慢反应的速率,但又不影响生成氢气的总量,可向反应物中加入适量的( )A.
碳酸钠(固体)
B.
水
C.
碳酸氢钠溶液
D.
氨水
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举一反三
【简答题】Chomsky uses the term ____to show a language user’s underlying knowledge about the system of rules.
【简答题】Chomsky uses the term _______ to refer to theactual realization of a language user’s knowledge of the rules of his languagein linguistic communication.A. langue B. competence C. parole D. performance
【单选题】Chomsky uses the term ____ to refer to the actual realization of a language user’s knowledge of the rules of his language in linguistic communication.
A.
langue
B.
competence
C.
performance
D.
parole
【简答题】前轮前束可通过改变横拉杆的长度来调整,一般前束值为多少?(注意单位)
【单选题】Chomsky uses the term to refer to the actual realization of a language user's knowledge of the rules of his language in linguistic communication.
A.
langue
B.
competence
C.
parole
D.
performance
【简答题】一个函数在它的函数体内调用它自身称为_______调用。
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