.FDA can ask for the proof of safety and effectiveness of a product ________.A. if it i
．FDA can ask for the proof of safety and effectiveness of a product ________.
A. if it is a drug
B. if it is a device
C. if its consumers make complaints
D. if its distributors challenge FDA’s authority
If it‘s the first prize you’re ________ ,you can" 英语 2020-05-13 …
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