[多选题]硫化氢检测仪器按使用分类有（ ）。
A.便携式
B.电化学型
C.固定式
D.半导体型
E.气体检测仪

[单项选择]李某与甲公司签订内销商品房预售契约，后某区房地产管理局对该预售契约作出预售预购备案登记。后李某了解到甲公司向其销售的房屋系超出规划面积和预售面积的超层部分，李某遂以区房地产管理局违法办理备案登记，造成自己购买的房屋为违法建筑为由提起行政诉讼。下列哪一说法不正确( )
A. 区房地产管理局的备案登记行为不是对预售合同效力的确认行为
B. 区房地产管理局在备案登记时没有尽到审查职责，应当对李某的损失承担部分赔偿责任
C. 甲与本案的审理结果有利害关系，可以作为第三人参加诉讼
D. 备案登记行为没有对李某的权利义务产生实际影响，不属于人民法院行政诉讼的受案范围

[多选题]作业场所使用化学品系指可能使工人接触化学品的任何作业活动,包括( )。
A.化学品的生产、贮存、运输等
B.化学品废料的处置或处理
C.因作业活动导致的化学品排放
D. 化学品设备和容器的保养、维修和清洁

[多项选择]工程风险管理是研究工程风险发生的规律和风险控制技术，通过对工程风险( )，并在此基础上优化组合各种工程风险管理技术，对工程风险实施有效的控制和妥善处tflX：程风险所致损失的后果。
A. 转移
B. 识别
C. 估测
D. 评价
E. 预防

[单项选择]某厂家生产洗衣机，固定成本是600万元，单价是800元，每个洗衣机可变成本为650元。当企业目标利润为120万，企业应该生产（）洗衣机。
A. 40000件
B. 45000件
C. 48000件
D. 50000件

[单项选择]

The earliest controversies about the relationship between photography and art centered on whether photographer’s fidelity to appearances and dependence on a machine allowed it to be a fine art (1) distinctive from merely a practical art. Throughout the nineteenth century, the defense of photography was identical with the (2) to establish it as a fine art. (3) the charge that photographers was a soulless mechanical duplication of (4) , photographers (5) that it was instead a privileged (6) of seeing, a revolt against commonplace vision, and (7) worthy an art than painting.
Ironically, (8) photography is securely established as a fine art, many photographers find it pretentious or (9) to label it as such. Serious photographers are no longer willing to (10) whether photography is not involved with art, (11) to proclaim that their own work is not involved with it. This shows the extent (12)
A. intend
B. wish
C. plea
D. struggle