Adrawing you're reading shows section lines on one part consisting of alternating solid and dashed 45-degree lines, while an adjacent part shows 45-degree double lines. from this you conclude that
a. the different section lines are used for different views of the same part
b. the drafter most likely made a mistake showing one of the parts incorrectly
c. both parts are made from the same material but are shown differently to view both parts clearly
d. the first part is likely to be made of copper and bronze, while the second is steel