Fetch value of dynamic dropdown

Ionic Framework ionic-v3
1

I have below code:
.ts file code:

unitArr = {
units: {
}
};

.html file code:

{{items.units_title}} {{item.qty}} Next Prev

It will display two or more dropdown dynamically:
Like 1) select bedroom 2) select bathroom

When I submit form I need values of this two selected dropdown.

Please help me if any one is expert here