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【判断题】
所有的森林和山岭、草原、荒地、滩涂都是属于国家所有。( )A.
正确
B.
错误
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【简答题】碱性电池的电解质主要足以 水溶液为主,如:碱性锌锰电池 (俗称碱锰电池或碱性电池)、镉镍电池、氢镍电池等。
【简答题】Fill in the blanks with the words given below in their appropriate forms. obsess, dedicated, prefer, fascinate, entertain, proportion, creativity, original, profit, somewhat Which of these two dresses...
【简答题】碱性电池是以 等碱性水溶液为电解液的二次电池的总称。
【简答题】Fill in the blanks with the words given below in their appropriate forms. obsess, criteria, dedicated, prefer, fascinate, entertain, proportion, creativity, original, profit, somewhat, reverse What ar...
【简答题】B For Canaan Elementary’s second grade in Patchogue, N.Y. , today is speech day, and right now it’s Chris Palaez’s turn. The 8-year-old is the joker of the class. With shining dark eyes, he seems like...
【简答题】a. grumbling b. chided c. pitiful d. inform e. equipment f. rebellious g. relieve h. assert i. resentment j. grumble k. horridly r. upset l. sternly s. engagement m. financial n. reprimanded o. brides...
【单选题】碱性电池具有容量大、放电电流大的特点，因而得到广泛使用，锌—锰碱性电池以氢氧化钾溶液为电解液，电池总反应为Zn+2MnO 2 +H 2 O=Zn(OH) 2 +Mn 2 O 3 ,下列说法错误的是（ ）
A.
电池工作时，锌失去电子
B.
电池正极反应式为： 2MnO 2 +H 2 O+2e - = Mn 2 O 3 +2OH -
C.
电池工作时，负极附近pH降低
D.
正极是水电离出的H + 得到电子
【简答题】Fill in the blanks with the words given below in their appropriate forms. obsess, criteria, dedicated, prefer, fascinate, entertain, proportion, creativity, original, profit, somewhat, reverse Which o...
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