闭式自动喷水灭火系统的喷头,其公称动作温度宜高于环境最高温度()度。
A、50
B、45
C、40
D、30
参考答案:D
关于硬下疳的描述中,正确的是()
A.是梅毒螺旋体侵入部位发生的无痛性炎症反应
B.潜伏期平均2~4周
C.除好发于外生殖器外,亦可见于肛门、直肠、 * * 、唇、面部等
D.溃疡边缘不整,锐利,周围红肿明显,基底不平,上覆灰白色脓液
Man: I really need to make some extra money. I’ve practically spent my entire budget for the semester. Woman: You should check out the new cafeteria. I think there’re a few openings left in the evening. Question: What does the woman suggest the man do().
A. Have dinner at the cafeteria.
B. Find out when the cafeteria opens.
C. Meet her in the cafeteria this evening.
D. Try to get a job at the cafeteria.