Can I examine my 1040 before it is submitted by Turbo Tax?

Yes and you should review it!  Before filing you can preview the 1040 or print the whole return. You have to pay any fees first before you can see all the forms, etc.
https://ttlc.intuit.com/community/accessing/help/how-do-i-preview-my-turbotax-online-return-before-filing/00/26160