【单选题】15-17病人男性,因十二指肠溃疡并发瘢痕性幽门梗阻,反复呕吐宿食,消瘦,皮肤干燥,弹性减退。入院后经充分术前准备,行胃大部切除术。17. 手术后若发生胃肠吻合口出血,最早出现的临床表现是
【单选题】When did hydroelectric power was universally considered as an environmentally safe and clean means of electricity generator?
C.
In the middle .years of 20th century.
【简答题】To be effective, hydroelectric dams should be built across rivers with both sufficient head and ______.
【单选题】生,因十二指肠溃疡并发瘢痕性幽门梗阻,反复呕吐宿食,消瘦,皮肤干燥,弹性消失。入院后经充分术前准备,在硬脊膜外麻醉下行胃大部切除术。 术后若发生胃肠吻合口出血,最早出现的临床表现是:
【单选题】(3)术后若发生胃肠吻合口出血,最早出现的临床表现是
【简答题】Global hydroelectric power in theory is approximately ______ than the amount that has been taken advantage of today.
【单选题】生,因十二指肠溃疡并发瘢痕性幽门梗阻,反复呕吐宿食,消瘦,皮肤干燥,弹性消失,入院后经充分术前准备,在硬膜外麻醉下行胃大部切除术。术后若发生胃肠吻合口出血,最早出现的临床表现是
【单选题】生,因十二指肠溃疡并发瘢痕性幽门梗阻,反复呕吐宿食,消瘦,皮肤干燥,弹性消失,入院后经充分术前准备,在硬膜外麻醉下行胃大部切除术。术后若发生胃肠吻合口出血,最早出现的临床表现是
【单选题】A drawback to low head hydroelectric power stations is that they depend on ______ .
C.
seasonal wind direction
D.
the earth's self rotation