法治社会要求政府依法行政，简述依法行政的尺度（标准）包括哪些方面？
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You are preparing to slush a stay on your vessel by lowering yourself down the stay in a bosun’s chair.The proper way to do this is to ride down the stay on a riding shackle（）.
A. with the pin of the shackle riding on the stay
B. with the pin of the shackle through the chair's bridle eye
C. with a hook attaching the chair to the riding shackle
D. connected to a second shackle on the chair
二极管混频器的优点（）
A. 组合频率小
B. 噪声小
C. 无反向辐射
下列哪种物质可引起氯痤疮：（）
A. 煤焦油
B. 铬制剂
C. 铍制剂
D. 砷制剂
E. 卤代烃类化合物
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