A. 3 B. 4 C. 5
A. after drydocking,while the hull is moist B. after drydocking,and the hull has dried C. afloat,where it is leaking D. afloat,in all accessible area
A. 卵巢黄素囊肿 B. 卵巢黄体囊肿 C. 葡萄胎 D. 侵蚀性葡萄胎 E. 滋养细胞肿瘤
A. 墙 B. 门 C. 窗 D. 幕墙系统