每个窦性搏动后发生二次室性期前收缩()每两个窦性搏动后发生一次室性期前收缩()
A.二联律
B.三联律
C.四联律
D.成对的室性期前收缩
E.成串的室性期前收缩
参考答案:D,B
He will come here _______5:00 _________6:00 this afternoon.
A.among; and
B.between; and
C.from; to
D.among; or
下列不是评价室内小气候的指标是()
A.皮肤温度
B.体温
C.血压
D.脉搏
E.温热感