负责所管辖的水利工程建设安全生产的监督管理工作的单位是()。
A.流域机构
B.县级以上政府
C.省政府
D.水利部
参考答案:A
患者女性,73岁,昏迷。记录心电图如图4-1-3所示,基线增粗的原因是()。
A.电极接触不良
B.肌肉震颤
C.交流电干扰
D.导联线折断
E.基线漂移
31. —How long_________each other before they_________married?
—For about a year.
A.have they known, get
B.did they know, were going to get
C.do they know, are going to get
D.had they known, got