A.7mm B.8mm C.9mm D.10mm
A.10mm B.9mm C.8mm D.7mm
A.700mm B.800mm C.900mm D.1000mm
A.300mm B.400mm C.500mm D.600mm
A.1/3 B.2/3 C.3/3 D.4/3
A．三顺一丁 B．一顺一丁 C．全顺 D．梅花丁
A.100% B.90% C.80% D.70%
A.起重半径 B.起重臂倾角 C.起重力矩 D.行走速度
A.70% B.80% C.90% D.100%
A.细石混凝土 B.混合砂浆 C.水泥砂浆 D.石灰砂浆
A.40 B.50 C.60 D.70
