下列哪些不是急性心衰的诱因:()
A.感染
B.妊娠与分娩
C.心律失常
D.脱水
E.酸中毒和高血钾
参考答案:D
—Sorry,but I have to________now.I have a train to catch.
—Goodbye!Wish you a pleasant journey.[ ]
A. ring out
B. call out
C. call on
D. ring off
海洋产权界定