哪类肺癌在早期就发生淋巴转移()
A.鳞癌
B.腺癌
C.大细胞未分化癌
D.小细胞未分化癌
E.细支气管肺泡癌
参考答案:D
实验对象是指实验课题所涉及的实验研究总体;实验样本是从实验对象群体中抽取出来,用于直接考察的受试个体。
Accidental escape of oil out of a tank when it gets too full because pumping was not stopped in time defines().
A.overloading
B.over discharging
C.overflow
D.overtaking