去死因寿命表方法求得消除某种死因后的平均预期寿命的增量,综合说明对人类寿命的影响()。
A.某种环境因素
B.某种死因
C.卫生状况
D.社会经济因素
E.遗传因素
参考答案:B
Large quantities of solid fuel consumed every day and too much carbon dioxide is sent into the air,
which in turn ___the going up of temperature. [ ]
A. is; results in
B. are; results in
C. is; leads to
D. are; results from
结核性溃疡的临床表现是()
A.溃疡形态与创伤因子楔合
B.表面凹陷,覆盖黄色假膜,边缘整齐
C.基底菜花状,浸润广且有硬结
D.基底桑椹样肉芽肿,边缘鼠啮状,潜掘状
E.溃疡表面覆盖棕黄色薄痂,溃疡底部触诊如硬币或软骨样