依据现行的《自动喷水灭火系统施工及验收规范》规定,自动喷水灭火系统配水干管(立管)与配水管(水平管)连接,应采用法兰式管件连接,不应采用机械三通。
参考答案:错
I'll spend as much time as I can _____ after the flowers in the garden. [ ]
A. look
B. to look
C. looking
D. looked
以下哪一项X线检查结果提示NEC病情严重
A.肠腔液平
B.肠蠕动消失
C.肠腔扩张明显
D.肠壁积气呈串珠状
E.肝内树枝状空气图像