工程咨询作为一个独立的行业,始于( )。它是近代工业化的产物,最初出现在建筑业中。
A.19世纪下半叶
B.19世纪上半叶
C.18世纪下半叶
D.20世纪上半叶
参考答案:A
______his food______, the man had to come out of his hiding place.
A.Since; runs out
B.Because; ran out
C.With; run out
D.For; running out
Z151蒸汽吊车锅炉工作压力为()公斤力/厘米2.
A.10
B.11
C.12
D.13