Samplig frame is the source material from which the sample is drawn. If you have a 'list' of names of all inviduals from which you could draw a sample, the list is a sampling frame.
A samplig unit is the sample being chosen.
4 . ---------------------------------------------------- It is a very frequently confusion: gram is a unit of mass, teaspoon is a uinit of volume; they are not compatible. For an answer you need to know the density of the material because: mass = volume x density
Ang mga bagay na madaling uminit ay kadalasang may mataas na thermal conductivity, tulad ng metal. Halimbawa, ang kawad ng tanso at bakal ay mabilis na nag-iinit kapag inilagay sa apoy. Gayundin, ang mga likido tulad ng tubig at langis ay mabilis na nag-uinit sa ilalim ng pinagkukunan ng init. Sa kabuuan, ang mga materyal na may mababang spesipikong init at mataas na conductivity ang madaling uminit.
if you really need a flame you can fill up your zippo with anything that will burn. this includes gassoline, alachol, and even alacholic beverages such as wiskey or moonshine. but be warned: filling up your zippo with these alternative fules can be very dangerous because they might explode. if you had to refill a zippo with an alternitive fuel you are better going off with an alachol based fuel rather than a gasoline type fuel. alachol burns cleaner and is alot less likely to blow up in your face. if you do not need a to light your zippo because of an emergency or something i suggest you just fill it up with lighter fluid as it was ment to be filled with. plus if you fill it up with anything becides lighter fluid you void the lifetime guarantee. it is just not worth it. hope I could help ** I belive the same can be said for kerosene. Be careful with gasoline if you over fill a zippo with it enough might atomize to cause a small explosion kind of like when you over fill it with lighter fluid it will burn in places besides on the wick. **rubbing alachol is mostly safe thats what i filled up with mine