【題目】將下列四種物質(zhì)白醋、食用油、食鹽、酒精分別放入水中,能形成乳濁液的是( )
A.白醋 B.食用油 C.食鹽 D.酒精
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【題目】關(guān)于金屬在自然界中存在形式的說(shuō)法中正確的是(雙選)( )
A.金、銀可在自然界中以單質(zhì)形式存在,是因?yàn)樗鼈兊幕顒?dòng)性很弱
B.在自然界中很難找到以單質(zhì)形式存在的金屬,是因?yàn)榻饘儋Y源太少
C.在自然界中存在最多的單質(zhì)是鐵
D.金屬礦物廣泛存在于地殼和海洋中
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【題目】醫(yī)藥上常用 75%的酒精溶液作為消毒劑,其中______是溶質(zhì),______是溶劑。而碘酒中______是溶質(zhì),______是溶劑。
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【題目】溶液的用途非常廣泛,下列常見(jiàn)的醫(yī)用溶液中,溶劑不是水的是 ( )
A.葡萄糖注射液
B.生理鹽水
C.消毒酒精
D.碘酒
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科目:初中地理 來(lái)源: 題型:
【題目】D
Simon is a student in a middle school. He is very strong. He goes to No.6 Middle School on a bus. He’s good at English. But he’s often late for his English classes. His father is a doctor. He’s big and tall. He works in a big hospital. His mother is a nurse. She’s slim and pretty. They are in the same hospital. They all work hard. He loves his father and mother very much. His father and mother both go to work by bike. We can see bikes here and there. And China is a "country of bikes".
【1】What is Simon?
A. He is very strong. B. He is a student.
C. He is a son. D. He is a doctor.
【2】How does Simon go to school?
A. By bike.
B. His father takes him to school every day.
C. On foot.
D. By bus.
【3】 What does Simon’s father look like?
A. He’s big. B. He works in a big hospital.
C. He’s tall. D. A and C.
【4】 Why do we say China is a "country of bikes"?
A. Because we all go to school by bike.
B. Because everyone in China likes bikes.
C. Because bikes can make us strong.
D. Because there are many bikes in China, we can see bikes here and there.
【5】Where does Simon’s parents work?
A. They work in the same hospital.
B. His father works in a big hospital, but his mother doesn’t.
C. His mother works in a big hospital, but his father doesn’t.
D. They both go to span>work by bike.
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【題目】下列有關(guān)溶液的說(shuō)法中,正確的是( )
A.溶液都是無(wú)色透明的
B.溶液中的溶劑一定是水
C.均一、穩(wěn)定的液體都是溶液
D.溶液都是由溶質(zhì)和溶劑組成的
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【題目】溶液是由溶質(zhì)和溶劑組成,其中溶質(zhì)的狀態(tài)( )
A、只能是固態(tài)
B、只能是液態(tài)
C、只能是氣態(tài)
D、可以是固態(tài)、液態(tài)或氣態(tài)
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【題目】將飽和石灰水變?yōu)椴伙柡褪宜,可采用三種方法:①______________;②______________________;③________________________________.
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