下列进沉降罐的介质有()。
A.MTO装置急冷水、水洗水
B.烯烃分离来的水洗水
C.气压机一、二、三段凝液
D.V107废甲醇
参考答案:A, B, C, D
中年男子食用猪肚后,出现头痛、头昏、心悸、心律失常、呼吸困难、肌肉震颤和疼痛等中毒症状,污染物质可能是()
A.李斯特菌
B.肉毒梭菌
C.盐酸克伦特罗
D.大肠埃希菌
E.多环芳烃
Cheer up, Maria! You can also enjoy _____ you have been dreaming of, if you don't lose heart.[ ]
A. as a convenient life as
B. as convenient a life as
C. as a life convenient as
D. convenient as a life as