下列哪项有助于室性心动过速与室上性心动过速的鉴别
A.心脏增大
B.过去发现室早
C.心室率160次/分
D.心电图有心室夺获及室性融合波
E.心电图QRS波宽大畸形
参考答案:D
管理是否有效,关键在于是否有灵敏、正确、有力的()
A.监督系统
B.激励系统
C.反馈系统
D.绩效考评系统
The time is not far away _______ the information will be made known ______ more workers will be trained for their jobs.
A.until; which
B.when; that
C.before; that
D.as; which