下列食品污染中,不属于化学污染的是
A.工业“三废”
B.化学农药
C.食品包装材料
D.人工放射性同位素
参考答案:D
—Have you persuaded him?
—Yes. After some hours of discussion, I ________ to reason him in accepting the new plan.
A.had managed
B.would manage
C.have managed
D.managed
下列疾病出现气管向健侧移位的是()
A.慢性阻塞性肺气肿
B.严重气胸
C.肺炎球菌肺炎
D.严重肺不张
E.慢性支气管炎