患者,男,45岁。因突然呕血入院。10年前患乙肝,因肝功能损害曾多次住院治疗。近感腹胀,乏力。查体:脾大,腹水。应首先考虑的是()
A. 肺结核慢性空洞咯血
B. 胃溃疡出血
C. 急性支气管炎出血
D. 肝硬化,胃底食管静脉丛破裂出血
E. 十二指肠溃疡出血
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The Company network utilizes the Multiple-instance Spanning Tree protocol in its switched LAN. Which three statements about the MST protocol (IEEE 802.1S) are true? ()
A. To verify the MST configuration, the show pending command can be used in MST configuration mode.
B. When RSTP and MSTP are configured; UplinkFast and BackboneFast must also be enabled.
C. All switches in the same MST region must have the same VLAN-to-instance mapping, but different configuration revision numbers.
D. All switches in an MST region, except distribution layer switches, should have their priority lowered from the default value 32768.
E. An MST region is a group of MST switches that appear as a single virtual bridge to adjacent CST and MST regions.
F. Enabling MST with the "spanning-tree modemst" global configuration command also enables RST
引起LDH升高的原因不包括()。
A. 心肌梗死
B. 肌肉损伤
C. 肝炎
D. 溶血
E. 肾脏损伤
()位于黑龙江省鸡西市东部,距鸡西市130公里,由大、小两湖组成。大湖是中俄界湖,北属中国,南属俄罗斯,总面积为4380平方公里,我国境内为1240平方公里。小湖是我国内陆湖,面积为176平方公里。
A. 呼伦湖
B. 兴凯湖
C. 贝尔湖
D. 长白山天池