在锚喷混凝土加固基坑坑壁的施工技术要求中规定,水泥和速凝剂称量的允许偏差均为()。
A.±1%
B.±2%
C.±3%
D.±4%
参考答案:B
— Did Daisy catch the early bus?
— Hardly ______ to the bus stop when the bus started. [ ]
A. had she got
B. she had got
C. has she got
D. she has got
ZXDU600E-24 600A组合电源系统空开组合配置根据用户的需求可有4路、8路、9路、12路~36路多种组合,容量可在6A~63A之间选用。其中二次下电组合:最大()路。
A、14
B、16
C、22
D、24