How many ____ do you have?[ ]
A. crayon
B. crayons
C. crayon's
答案:B
There were two small rooms in the house, ____ smaller of which served as ____ kitchen.
A.the, a
B.a, the
C.the, the
D.a, a
施工测量验线工作的基本准则要求独立验线,( )等应尽量与放线工作无关。
A.观测人员
B.仪器设备
C.测法
D.施工定位
E.观测路线