设乙数为x,甲数为45x,
45x+x=27,
145x=27,
x=27÷145,
x=15;
答:乙数是15.
American English is more or less different ____British English ____ pronunciation and spelling.
A.from; in
B.with; in
C.from; with
D.with; on
患者,女性,60岁。既往无胃病史,近半年来,出现上腹痛,食欲减退,体重下降,一般状态较好。内镜发现胃角溃疡,约1.0cm×0.8cm,病理诊断为早期胃癌,首选的治疗方法是()
A.内镜下切除
B.手术治疗
C.介入动脉化疗
D.内镜下局部化疗
E.免疫治疗