直线AB的V投影平行于OX轴,下列直线中符合该投影特征的为()。
A.水平线
B.正平线
C.侧平线
D.正垂线
参考答案:A
—Do you know if the foottball game has started yet?
—Started? It must be certain who ________ by now.
A.is winning
B.wins
C.has won
D.would win
患者,男,43岁,因腹痛,消瘦来诊,行胃镜检查示胃溃疡。
该患者腹痛的性质错误的是
A.位于上腹正中
B.为阵发性绞痛
C.疼痛的规律为进餐-疼痛-缓解
D.服制酸剂可缓解
E.劳累,烟酒可诱发