雷电通道波阻抗
参考答案:沿雷电通道运动的电压波现电流波的比值叫做雷电通道波阻抗。
Which statement concerning GMDSS Radio Operator requirements is FALSE().
A.Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at sea
B.Each compulsory vessel must carry at least two licensed Radio Operators at all times while at sea and may elect to carry a GMDSS Radio Maintainer as well
C.Communications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communications
D.While at sea,adjustments to,and the maintaining of,GMDSS equipment may be performed by the GMDSS Radio operator as long as the work is supervised by an onboard licensed GMDSS Radio Maintainer
36周孕妇,因上楼爬坡时心悸气促就诊,查:血压140/90mmHg,脉搏96次/分,呼吸20次/分,叩诊心稍向左扩大,心尖区及肺动脉瓣区均可闻及Ⅰ级收缩期吹风样杂音,左肺底部可闻及啰音,咳嗽后消失,尿蛋白(+),下肢浮肿(+)。
以下哪项处理不对
A.解痉,降压,镇静
B.强心,利尿,扩血管
C.应用抗生素
D.扩容
E.短时间内终止妊娠