The war of nerves between the Dutch government and South Molluccan gunmen holding 60 hostages intensified in its sixth day today, as the terrorists pressed demands to take their captives and 21 jailed comrades to an unknown refuge abroad.

Prime Minister Joop Den Uyl has said that no hostages leave Dutch soil, and that this condition must be accepted before his government would consider letting the terrorists out of the country.

Meanwhile, 17 of the 105 school children released by the South Molucans Friday morning remained hospitalized. One child displayed symtoms of viral meningitis, but doctors would not confirm that he had contracted the illness.

Medical officials said the cramped, unhygienic conditions endured by the children during their four-day captivity caused vomitting, headaches, stomach pains and diarrhea. They denied that the ailments resulted from bacteria in the food the children ate during the siege.

Most of the pupils recovered quickly once they were freed and are now living at home with their parents.

The 15 terrorists, who are still holding four teachers in the Bovensmilde School and 56 passengers aboard a train nearby, said that the liberation of the children in no way altered their original demands.

They have requested a Boeing 747 jumbo jet to their impriosned fellow terrorists, the hostages and themselves to a secret destination. Rumors of possible destinations include South Yemen. Libya and Vietnam.

A South Molluccan youth group here, called "pattimura," published a letter supporting the demands of the gunmen. It argued that the Dutch government has not used enough influence to help bring about the creation of "a free republic of Ambon," a reference to the largest island in the chain off the southern tip of Indonesia that comprises South Molucca.

More food and medical supplies were delivered today to the train, isolated in the countryside 20 miles from the school, by two men pushing a trolley along the tracks.

They returned wit a load of garbage, the first time the gunmen have cleared the mounting refuse from the train.

Dutch authorities pleades with the 10 gunmen in the train of fred an ailing woman in the seventh month of pregnancy. Another passenger is suffering from severe mental depression and requires urgent medical attention.

"Our opinions and arguments with the terrorists were further clarified today," said a Justice Ministry spokesman.

He refused to divulged details of the bargaining.

Dutch authorities have received - and declined - numerous requests from volunteers around the country who said they were willing to serve as substitutes for the beleagured train hostages.

The 17 children still under medical care spent most of the day resting. When not sleeping, they played toys brought from home.

Four parents, speaking on behalf o families of the abducted children, held a press conference today to ask reporters to respect their privacy.

About 300 journalists and photographers have descended on this cluster of villages in northern Holland. Fist fights broke out between fathers and photographers who swarmed around parents reunited with their children freed from the Borensmilde school.

One factor of a kidnapped pupil said he had been offered $2,000 for an exclusive interview with a Dutch newspaper "That is more than I make at my job in two months," he said. But he said he refused the offer to shield his son from publicity.