【判断题】Two lines are parallel in space provided that their respective projections on two projection planes are parallel.
【判断题】If two lines in space are intersection, their projections will intersect also.
【判断题】Two projections give 3 coordinates of a point.
【简答题】患者男性,35岁,反复上腹部疼痛6年,多于每年秋季发生,疼痛多出现于餐前,进餐后可缓解,近2日疼痛再发,伴反酸。体检发现剑突下压痛,Hb10g/L,粪便隐血(+++)。该患者首先应考虑的诊断是A、消化性溃疡 B、急性胃黏膜损害 C、食管贲门黏膜撕裂综合征 D、胃癌 E、胃黏膜脱垂 进一步应先作哪项检查A、胃肠钡餐透视 B、胃液分析 C、内镜 D、腹部B超 E、幽门螺杆菌检测 应首先采取哪项治疗A、...
【判断题】零售商品的调价与削价是相同的概念,都是对残次冷背商品进行价格上的调整。
【判断题】零售商品的调价与削价是相同概念,都是对残次冷背商品进行价格上的调整。( )
【单选题】What two types of projections give a pictorial view of the object without convergence?
A.
orthographic and perspective
B.
oblique and axonometric
C.
perspective and oblique
D.
isometric and orthographic