Answer: Because MM's CEO, Crosscut Sal, is a stickler for keeping machinery running, the company stocks quick-change replacement modules for the two most common ..
Explanation:
 
        
             
        
        
        
Answer:
a) temperature: random error
b) parallax: systematic error
c) using incorrect value: systematic error 
Explanation:
Systematic errors are associated with faulty calibration or reading of the equipments used and they could be avoided refining your method. 
 
        
             
        
        
        
Answer:
They are use to hold garment or fabric pieces together before pernament stitches are made
 
        
                    
             
        
        
        
Explanation:
Look at the drawings and decide which view is missing. Front? Side? Top? Then draw it