A small experiment is designed to prove the existence of air by using common articles at home

A small experiment is designed to prove the existence of air by using common articles at home


Take a syringe and pull it out to let the air into the syringe. Then block the hole of the syringe by hand and squeeze it inward. It is found that it can not be squeezed to the original state, which proves the existence of air



Find a manual of small household appliances, try to operate according to the manual, and then write down the operation process
Requirement: 3 lines. Not rice cooker. Come out in 2 days


Instructions for checking accessories of hair dryer: plug the plug into the 220 V power supply, turn on the power switch. Turn on the high and low wind gears respectively, test the air volume change and noise, turn on the cold and hot air switch, test the air temperature, and test the handle of the switch when opening any switch



Find a five digit palindrome number or not
Private Sub Form_ Click()
a = InputBox("1")
Print a
sl = Len(a)
For i = 1 To 2
If Left(a, i) Right(a, i) Then
Print "no"
Exit For
Else
Print "yes"
End If
Next
End Sub
What's wrong? Thank you!
I copy your answer, but no matter what you input, it will print out "yes" when running!


If you input 12341, you will output yesno. Input 12321 is also output yesno. Your program is the first to judge correctly, but it will make a mistake when the value of I is 2. When input a = 12321left (a, 2) = 12 and right (a, 2) = 21, it is obvious that they do not