( )广泛用于一般性计划和可行性研究、设计、详细设计和施工监理等咨询活动。
A．设备维修合同
B．施工监理合同
C．百分比合同
D．单价合同
参考答案：D
He _____ in the exam. The teacher_____think he _____ his best. [ ]
A. failed, didn't, did
B. failed, /, didn't
C. fails, didn't, do
D. failed, /, did
病人在休克早期就出现昏迷。（）
