上述哪种肿瘤的组织发生来自闰管储备细胞()
A.皮脂腺腺瘤
B.嗜酸性腺瘤
C.黏液表皮样癌
D.Warthin瘤
E.多形性腺瘤
参考答案:E
电除尘设置进、出口烟箱的作用是减小烟气流速的阻力损失。()
Which of the following doesn’t belong to the Four Great inventions of Ancient China?
A.Compass
B.Gunpowder
C.Paper-making
D.Printer