以铁为阳极,铜为阴极,对足量的NaOH溶液进行电解。一段时间后得到2molFe(OH)3沉淀,此时共消耗水的物质的量为 [ ]
A.2mol
B.3mol
C.4mol
D.5mol
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已知连续两个奇数之积是143,这两个奇数分别是( )。
动词填空 用括号内所给动词的适当形式填空。(本大题共8分,每小题1分)
小题1:--- What’s the noise? --- Oh, the students _________ ( plan ) their autumn trip excitedly.
小题2: The radio says that the rain ________________ ( stop) in a few hours.
小题3:Not only the twins but also Tom often____________(mix) the sugar with the coffee together.
小题4: How much time do you usually spend _____________ (do) some reading every weekend?
小题5:_____________ (take) care of his wife, he gave up the chance to go abroad.
小题6:--- Why didn’t you come and open the door for me, dear?
--- Oh, sorry, I _______________(cook) in the kitchen. I didn’t hear you.
小题7:--_______ your father ___________ (make) the weather report today?
--- Yes, he did. He says it’s important for us all. He must do it well.
小题8:There will be less space for wildlife if we ____________ (not protect) the wetlands.
葡萄糖()
A.通过血管合体膜裂隙或通过细胞膜内陷吞噬
B.易化扩散
C.主动运输
D.滤过作用
E.简单扩散
下列选项属于中国人民银行的法定职责的是( )。
A.买卖政府债券
B.持有、管理、经营国家外汇储备、黄金储备
C.发行金融债券
D.办理国内外结算
根据《反间谍法》规定,家安全机关的工作人员依法执行任务时,具备什么条件才可以进入限制进入的有关地区、场所、单位,查阅或者调取有关的档案、资料、物品?()
A.经过批准,出示相应证件
B.出示相应证件
C.经过有关机关备案
D.经过批准