CA19-9主要作为下列哪些癌的肿瘤标志物() ["A．胰腺癌 ","B．胆囊癌 ","C．乳腺癌 ","D．肺癌 ","E．肝癌 "]
具有神经内分泌形态特征的肿瘤有() ["A．非典型类癌 ","B．类癌 ","C．小细胞癌 ","D．甲状腺髓样癌 ","E．乳腺髓样癌 "]
端粒酶与肿瘤细胞的生命活动密切相关，其功能是() ["A．使染色体末端的端粒逐步缩短 ","B．维持肿瘤细胞的持续增殖具有抗凋亡作用 ","C．复制合成端粒的序列 ","D．促进肿瘤细胞的转移 ","E．加速葡萄糖的合成 "]
休克对肾功能有何影响?
根据休克发展过程，休克分为哪三期?
何谓休克肺?
