PEEP可增加()
A.肺泡内压力
B.气道平均压
C.功能残气量
D.心脏排出量
E.心脏回流量
参考答案:A, B, C
Mr. Andrew taught his students how to develop the basic skills in the physics class, ______ everything through jokes and experiments.
A.to explain
B.explained
C.explaining
D.explains
境外参展费对外支付提供哪些材料?()
A、书面申请
B、合同或协议
C、发票或支付通知
D、其他相关材料