一次组织
参考答案:
熔池凝固后得到的组织。
—The boys of Class Two are going to the seaside this weekend.
—Um, remember _______ them _______ in the sea alone. It's dangerous. [ ]
A. to tell; not to swim
B. telling; swimming
C. to tell; swimming
D. telling; to not swim
判断肺血栓栓塞患者需要溶栓治疗的主要依据是()
A.出现呼吸衰竭
B.出现肺动脉高压
C.存在体循环功能障碍
D.出现右心功能异常
E.合并下肢深静脉血栓