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【简答题】
判断下列说法是否正确（填正确或错误） （1）具有相同质子数的微粒一定是同种元素的原子 ______ （2）阴离子失去电子后可转化为原子 ______ （3）分子是保持物质化学性质的一种微粒 ______ （4）在任何微粒中，元素正、负化合价的代数和为零 ______ （5）含氧化合物不一定是氧化物 ______
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皮皮学刷刷变学霸
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【简答题】机械铺轨时，铺轨前铺砟厚度宜为（ ）。
【单选题】The way to fix this is by navigating to the Google Settings app, tapping on Search and Now, then Voice, “Ok Google” detection and ___________ the “from any screen”option.
A.
turning in
B.
turning out
C.
turning on
D.
turning off
【判断题】The European Union said Google began efforts in 2008 to boost the service now known as Google Shopping.
A.
正确
B.
错误
【单选题】Google is an American search engine company founded in _____. Now the word google is often used as a verb for Internet searching.
A.
1998
B.
1999
C.
2000
D.
2001
【单选题】The European Union said Google began efforts in 2008 to boost the service now known as Google Shopping.
A.
T
B.
F
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