非招标工程的合同价款，由当事人双方依据( )协商后，填写在协议书内。
A．工程监理书 B．工程预算书C．工程施工书 D．工程勘察设计书
参考答案：B
运用客车质量鉴定条件中，发电车采暖装置作用不良属（）故障。
A.A类
B.B类
C.C类
D.D类
— Watch!
— I ____ but ____ I ____ anything unusual. [ ]
A. watched; have watched
B. have watched; am not seeing
C. was watching; wasn't seeing
D. am watching; don't see
