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【单选题】
男性,46 岁。4 年来恶心、胃胀、食欲不振、身乏力,2 前突然呕血400ml 。体检:生命体征平稳,神情,表情淡漠。心肺无异常。肝于右锁骨中线肋下3 . 0cm ,脾脏左肋下4 . 0cm ,移动性浊音阳性,双下肢水肿。实验室检查:白细胞减少、血小板减少,出凝血时间延长;转氨酶增高,胆红素增高,白、球蛋白比例倒置;吞钡x 线检查食管静脉曲张;超声检查提示脾大、腹水。诊断为门静脉高压征。拟行脾切除、门-奇静脉断流术。该患者最适宜的麻醉方式是
A.
硬膜外阻滞
B.
腰麻
C.
表面麻醉
D.
全身麻醉
E.
神经阻滞
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【判断题】演奏时看到自由延长记号表示我们可以自由延长音符的时值。
A.
正确
B.
错误
【简答题】Dongfang Hotel is a four-star hotel. It is located in the centre of the city, with a parking lot for 150 cars. The 650 rooms are of international first-class standard. They are well furnished with fu...
【简答题】Dongfang Hotel is a four-star hotel. It is located in the centre of the city, with a parking lot for 150 cars. The 650 rooms are of international first-class standard. They are well furnished with fu...
【简答题】三相交流异步电动机的铭牌如下图所示, ( 1 )请计算出:磁极对数 P 、转差率 S 。 ( 2 )说明以下标示的含义:工作制 S1 、防护等级 IP44 、 B 级绝缘。
【简答题】三相异步电机的极对数p、定子频率f 1 、转子频率f 2 、转差率s、同步转速n 1 、转速n、转子磁动势F 2 相对转子的转速n 2 之间是互相关联的。试填满下表中的空格(转速的负号表示转子转向与气隙旋转磁场转向相反)。 p f 1 /Hz f 2 /Hz s n 1 /r·min -1 n/r·min -1 n 2 /r·min -1 1 50 0.03 2 50 1350 3 50 1 4 ...
【简答题】Dongfang Hotel is a four-star hotel. It is located in the centre of the city, with a parking lot for 150 cars. The 650 rooms are of international first-class standard. They are well furnished with fu...
【简答题】Dongfang Hotel is a four-star hotel. It is located in the centre of the city, with a parking lot for 150 cars. The 650 rooms are of international first-class standard. They are well furnished with fu...
【单选题】her followers and her peers
A.
她的长辈和领导
B.
她的追随者和同辈
【简答题】已知某三相异步电动机在额定状态下运行,其转速为1430r/min,电源频率为50Hz。求:电动机的磁极对数p、额定运行时的转差率S N 、转子电路频率f 2 和转差速度Δn。
【简答题】Dongfang Hotel is a four-star hotel. It is located in the centre of the city, with a parking lot for 150 cars. The 650 rooms are of international first-class standard. They are well furnished with fu...
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