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【简答题】
是使离子按不同比大小进行分离的装置，是质谱仪的核心。
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举一反三
【简答题】What safety issue do you have to think about when you go away on holiday?
【简答题】__________ a year do you have a holiday?
【简答题】How often do you have holidays? [Why?] When do Chinese normally have holiday? What will you do during holidays? Is holiday important? [Why/Why not?] Answer the four questions in no less than 90 second...
【单选题】— Do you have any plans for this holiday? — To tell you the truth, I have nothing in for holiday.
A.
head
B.
mind
C.
heart
D.
brain
【判断题】形象化设计要注意具体形象在文字中的位置及图形与文字之间的关系。以不影响文字的完整性、可识性为前提,起到加强字体表现力的作用。形象的应用要避免生搬硬套,或简单图解化造成的字体格调平庸。
A.
正确
B.
错误
【单选题】—Do you have any plans for you summer holiday? —Yes, My parents and I ______to visit Disneyland in Hong Kong. [ ]
A.
will go
B.
am going
C.
go
D.
are go
【简答题】I haven't seen you since you came back from holiday. ________a nice time? [A]Do you have [B]Did you have [C] Have you had [D]Had you had
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