Zastanów się, co w pierwszej kolejności należy brać pod uwagę przy wyborze rodzaju ogrzewania: koszty instalacji, bezpieczeństwo użytkowania, estetykę, koszty eksploatacji, wpływ na środowisko czy użyteczność. każdej z wymienionych pozycji nadaj odpowiednią rangę. uzasadnij swoją decyzję.

Write a program that uses a widgetviewer object to do the following: generate two random integers between 1 and 9 (inclusive). name one of them x, the other y. display them to the user using jlabel objects. create a jlabel object displaying the text "enter an operation number." create a jtextfield for the user's input. create a jbutton displaying the text "press here when you've entered your operation." use addandwait to add it to the widgetviewer object. when the user clicks the jbutton, evaluate operation in the following order to determine the one and only mathematical operation to perform on x and y. use a jlabel to display the result. if operation is between 1 and 10 inclusive, add x and y. if operation is evenly divisible by 4, subtract y from x. if operation is evenly divisible by 5, use integer division to divide y into x. if operation is an even number, use floating point division to divide y into x. if none of the other tests on operation apply, multiply x and y. note: operation can be negative or zero.

Technician a says that with self-adjusting clutch systems, the release bearing constantly rotates. technician b says that the ball bearing portion of the release bearing should be lubricated with high-temperature grease during routine maintenance. which technician is correct?

You work in the accounting department and have been using a network drive to post excel workbook files to your file server as you complete them. when you attempt to save a workbook file to the drive, you see the error message: “you do not have access to the folder ‘j: \’. see your administrator for access to this folder.” what should you do first