No. Sorry.
Those scissor-style jacks are not strong enough or sturdy enough for lifting. They will raise your camper a little, but not strong enough to actually lift it. Besides, those jacks are hand cranked. I've tried cranking mine several times to actually "lift" the camper, and I just can't get enough "umph" to turn the handle after it reaches a certain point.
I have lowered the tongue jack, tightened the rear scissor jacks, and then raised the tongue jack to give an "extra" bit of tension to the back of the camper for more stability. But not enough to lift it.
I have also been on campsites that were so uneven, front to back, my tongue jack was not long enough to raise the front end of the camper to make it level. In those situations, I'll extend the tongue jack as far as I can, then tighten down the scissor jacks, then crank up the tongue jack and the scissor jacks will be holding the camper up on the front. I can then put more lumber under the tongue jack making it higher, then lower the tongue jack again to continue raising the front. For those few moments, they held. But I wouldn't trust them to support the camper at all for more than 30 seconds!
Answer to your question.... "no."