Schema: CREATE TABLE table_name_79 (power_output__kw_ VARCHAR, model VARCHAR, total_production VARCHAR, builder__family_ VARCHAR)
Question: What is the power output (kw) of builder zhuzhou, model hxd1d, with a total production of 2?
SQL: SELECT power_output__kw_ FROM table_name_79 WHERE total_production = "2" AND builder__family_ = "zhuzhou" AND model = "hxd1d"