根据GB6095-2009《安全带》4.2以安全带的产品性能分类,下列哪些字母可作为产品性能分类的标记()
A.Y
B.J
C.R
D.F
参考答案:A, B, C, D
—Did you scold him for failing in the maths test?
—Yes, but I'd rather I _______. [ ]
A. wouldn't
B. didn't
C. shouldn't
D. hadn't
男性,42岁,突然呕血、黑便,量约1500ml,伴神志模糊。急诊入院后查体:嗜睡,皮肤巩膜黄染,肝掌,皮肤毛细血管扩张,腹胀,移动性浊音(+),血压60/40mmHg,脉搏130次/分。急诊胃镜发现食管胃底下端静脉破裂伴活动性出血,应首选何种治疗()。
A.急诊行断流手术
B.急诊行分流手术
C.先以输血、止血药保守治疗好转后再行手术治疗
D.三腔二囊管压迫止血
E.局部栓塞止血