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【判断题】
紫外线灭菌常用于室内的空气消毒。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【判断题】Primary bonding is a type of physical bond, while secondary bonding is a type of chemical bond.
A.
正确
B.
错误
【简答题】____ and -S-S- bonds (disulfide bond) are responsible for maintaining the primary structure.
【单选题】If Microsoft sells a bond in London and it is denominated in dollars, the bond is
A.
Eurobond.
B.
foreign bond.
C.
British bond.
D.
currency bond.
【单选题】Newly issued stocks and bonds are bought and sold in______.
A.
auction markets
B.
primary markets
C.
futures markets
D.
commodity markets
【单选题】I understood that my primary goal had to be the _ of a new bond between the students and me.
A.
formational
B.
formationl
C.
construction
D.
structure
【多选题】In the United States, the three primary bond rating agencies are________.
A.
Standard and Poor ’ s
B.
Mandy ’ s
C.
Moody ’ s
D.
Fitch
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