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【单选题】
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举一反三
【简答题】25修约到个数位的0.5单位是(),将830修约到百位数的0.2单位是()。
【简答题】将下列数字修约到个数位的0.5单位(写出计算过程) (1)60.38 (2)60.25 (3)-80.75
【简答题】将60.25修约到个数位的0.5单位是 ,将 10.2750 修约至小数点后两位 , 27.1850 修约至小数点后两位 , 4.815修约到2位小数为 。
【多选题】从玫瑰花、丁香花及紫苏中提取挥发油,适宜的提取分离方法有( )。
A.
水蒸汽蒸馏法
B.
70%乙醇回流法
C.
吸收法
D.
压榨法
E.
SFE法
【简答题】Juan Martinez's life is mainly about the importance of going out to nature. He said" I still can't find the words to describe the first [ 1 ] I saw those mountains." He went [ 2 ] in the Teton Mounta...
【单选题】将60.25数字修约到个数位的0.5单位修约是()
A.
60.5
B.
60.0
C.
61.0
D.
60
【单选题】—Hi, John, I have not seen you for a long time. What _______ recently? —Carrying on some research on wildlife. [     ]
A.
have you been doing
B.
have you done
C.
were you doing
D.
did you do
【单选题】将60.25修约到个数位的0.5单位,修约后为( )。
A.
60.5
B.
60.0
C.
60.3
D.
60.2
【简答题】将数字 60.25 , 60.38 , 60.28 , -60.75 修约到“个”数位的 0.5 单位,得( )、( )、( )、( );
【简答题】He said"I like China very much." He said that ( )( ) China very much.
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