受要约人对要约的内容作出实质性变更的，为( )。
A．新要约B．承诺C．要约邀请D．邀请
参考答案：A
—Any suggestion?
—You'd better______the last sentence as it is rather misleading．
—Sounds reasonable．Then could you ______ a good ending to it?
A．put out; increase
B．leave out; add
C．pick out; find
D．knock out; choose
架空线路竣工验收时，应以额定电压对线路冲击合同（）。
A.5次
B.3次
C.1次
D.4次
