在矿井灾害事故发生初期,事故现场的作业人员应尽量了解或判断事故性质、地点和灾害程度,并向()报告.
A、矿调度室
B、矿安监站
C、上级部门调度室
D、上级监管部门
参考答案:A
It can be inferred from Dr. Alpa Patel’s study that____.
A.women have fewer chances of physical activity
B.daily walking could cut the chance of breast cancer
C.leisure-time activity is not associated with cancer risk
D.walking is not recommended for women with breast cancer
关于白色血栓,下列哪些描述是正确的()
A.白色血栓可见于风湿性心内膜炎
B.白色血栓主要由纤维素、血小板组成
C.白色血栓含化脓菌,故肉眼呈白色
D.风湿性心脏病时白色血栓机化可造成瓣膜变形
E.延续性血栓的头部亦是白色血栓