题目内容
(请给出正确答案)
[主观题]
A.He's studying for a test.B.He lost his notes.C.He missed the class.D.He's doing rese
A.He's studying for a test.
B.He lost his notes.
C.He missed the class.
D.He's doing research on alternative.
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A.He's studying for a test.
B.He lost his notes.
C.He missed the class.
D.He's doing research on alternative.
第6题
A.消毒液应现配现用
B.含氯消毒剂对金属有腐蚀作用
C.含氯消毒剂对织物有漂白作用
D.含氯消毒液配制完成后无需每次进行浓度检测(正确答案)
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