1. In the 1980s, Friedman turned to the study of control operators . 2. On-board speaker phones provide two-way communication between passengers and control operators . 3. If you find one, call your pest control operator immediately. 4. Get several estimates from a number of pest control operators . 5. One proposal offers two control operators : shift and reset. 6. Pest control operators say business has doubled over previous years. 7. Consult the Yellow Pages for beekeepers or pest-control operators who will remove the colony. 8. Dreher was initially the facility's chief control operator , but was soon was promoted to engineer-in-charge. 9. The Television Operator Certification exam demonstrates knowledge required for entry-level, non-technical television master control operators . 10. Shortly thereafter, the control operators began to smell propylene and also evacuated the control center.
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