A、defective solenoid valve
B、dirty fuel nozzle
C、grounded high tension lead
D、faulty ignition cable connector
更多“A burner responsible for producing black smoke in an automatic auxiliary boiler, would be caused by a （）”相关的问题
A、probe request/response， authentication request/response， association request/response B、association request/response， authentication request/response， probe request/response C、probe request/response， association request/response， authentication request/response D、association request/response， probe request/response， authentication request/response
A、 probe request/response， authentication request/response， association request/response B、 association request/response， authentication request/response， probe request/response C、 probe request/response， association request/response， authentication request/response D、 association request/response， probe request/response， authentication request/response
A、should be stopped manually B、keeps the combustion as usual C、would be cut off by an interlock D、would replace the waste oil burner and keep going on
A、A.fuel oil supply temperature is normal B、B.burner electrode is incorrectly positioned C、C.fuel／air ratio is incorrect D、D.ignition current is too low
A、response.getWriter（） B、response.getOutputStream（） C、response.getOutputWriter（） D、response.getWriter（）.getOutputStream（） E、response.getWriter（Writer.OUTPUT_TEXT）
A、association request/response， probe request/response， authentication request/response B、association request/response， authentication request/response， probe request/response C、probe request/response， authentication request/response， association request/response D、probe request/response， association request/response， authentication request/response E、None of the other alternatives apply
A、 response.getWriter（） B、 response.getOutputStream（） C、 response.getOutputWriter（） D、 response.getWriter（）.getOutputSTream（） E、 response.getWriter（Writer.OUTPUT_BINARY）
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