新氢系统，富气系统的管线、设备也要参加水联运操作。（）
参考答案：错
解析：新氢系统，富气系统的管线、设备不参加水联运操作，应做好隔离工作。
Many students agreed to come, but some students against because they said they don't have time.
A．were against because they said they did not
B．were against because they say they don't
C．were against it because they said they did not
D．were against coming because they said they don't
建设项目前期工作中，编制和评估项目建议书的费用属于（）。
A．勘察设计费
B．研究试验费
C．环境影响评价费
D．可行性研究费
