The first coolant used in refrigeration was ammonia freon® ice tetrafluoroethane

In which phase does software coding and testing happen in the spiral model? the spiral model does not have a separate testing phase. both, software coding and testing occurs during the phase.

Which is the correct sequence of steps to set up a document in landscape orientation? a. select page setup from the file menu. then click the margins tab and select landscape. b. select page setup from the edit menu. then click the margins tab and select landscape. c. select page setup from the insert menu. then click the margins tab and select landscape. d. select page setup from the format menu. then click the margins tab and select landscape

Instruction active describing list features which statements accurately describe the features of word that are used to create lists? check all that apply. the tab key can be used to create a sublist. the enter key can be used to add an item to a list. the numbering feature allows for the use of letters in a list. the numbering feature can change the numbers to bullets in a list. the multilevel list feature provides options for different levels in a list.