BAGHDAD, Iraq, Jan. 1 -- U.N. arms inspectors made surprise visits to a brewery and a 7-Up bottling plant today in their continuing search for banned chemical, biological and nuclear weapons in Iraq.

The inspectors also appeared unannounced at a missile maintenance factory and a truck repair company, where the owner complained they had disrupted his New Year's holiday. All four inspections occurred in or near Baghdad.

The inspectors made a first visit to the al-Magd company, which repairs heavy trucks, and a return visit to the al-Harith workshop, which does maintenance work on aging Soviet-designed antiaircraft missile systems.

The U.N. statement said the al-Harith facility contained electronics equipment and corrosion-resistant materials.

At the al-Magd company, assistant director Khudeir Abbas told reporters the visit to his workshop lasted about an hour, and he described the inspectors' conduct as "very professional."

But Abbas was clearly unhappy with the visit's timing. "Today is an official holiday and the beginning of the new year," he said, "yet we were forced to receive them."

It was the third time in a week that Iraqi officials have complained about the U.N. inspectors' methods.