Question 1: 6. These directions show you how to...

• Work with a hammer.
• Use a file. (Correct answer)
• Polish a file.
• Oil a vise.
• Repair shop tools.

Correct answer: Use a file.

The directions (implied by the subsequent questions) describe specific techniques and safety measures for using a hand tool to shape or smooth materials. These instructions, such as pressing down on the forward stroke and clearing teeth, are characteristic of how one would properly operate a file. Thus, the directions are guiding the user on how to effectively use a file.

Question 2: 7. When using a file...

• Always bear down on the return stroke.
• Move it in a circle.
• Remove the handle.
• Press down on the forward stroke. (Correct answer)
• Wear protective gloves.

Correct answer: Press down on the forward stroke.

Proper technique for using a file, as outlined in the implied instructions, dictates applying pressure only on the forward stroke. This ensures that the file's teeth cut effectively into the material and prevents them from dulling prematurely. Bearing down on the return stroke is incorrect and can damage the file.

Question 3: 8. When working on soft metals, you can...

• Remove the handle.
• Clear metal pieces from the teeth. (Correct answer)
• Bear down very hard on the return stroke.
• File in circles.
• Strengthen them with added wood.

Correct answer: Clear metal pieces from the teeth.

When working on soft metals, the file's teeth can easily become clogged with metal shavings, a condition known as 'pinning.' The implied instructions advise clearing these metal pieces from the teeth to maintain the file's cutting efficiency and prevent scratching or marring the workpiece. This is a crucial step for effective and clean filing of soft materials.

Question 4: 9. Protect your hands by...

• Dulling the teeth.
• Dragging the teeth on the backstroke.
• Using a vise.
• Installing a handle. (Correct answer)
• Wearing safety gloves.

Correct answer: Installing a handle.

To protect your hands when using a file, it is essential to install a proper handle. The handle provides a secure grip, preventing your hand from slipping off the tang (the pointed end) and onto the sharp teeth of the file or the workpiece. This safety measure minimizes the risk of cuts and injuries during use.

Question 5: 29. What did Lindbergh do before he crossed the Atlantic?

• He charted a route to China.
• He graduated from flight-training school. (Correct answer)
• He married Anne Morrow.
• He acted as a technical advisor during World War II.
• He was responsible for the fuel supply for planes.

Correct answer: He graduated from flight-training school.

Before his historic solo transatlantic flight in 1927, Charles Lindbergh had already established himself as an experienced aviator. The implied text or general historical knowledge confirms that a significant step in his career was graduating from flight-training school, which provided him with the skills and experience necessary for such a monumental undertaking.

Question 6: 30. What happened immediately after Lindbergh crossed the Atlantic?

• He flew the mail between St. Louis and Chicago.
• He left college.
• He attended the Army flight-training school.
• He was given the Congressional Medal of Honor. (Correct answer)
• He married Anne Morrow.

Correct answer: He was given the Congressional Medal of Honor.

Charles Lindbergh's solo transatlantic flight in 1927 was a monumental achievement that captivated the world. Immediately upon his return, he was widely celebrated and recognized for his bravery and pioneering spirit. He was awarded the Congressional Medal of Honor shortly thereafter, signifying national recognition for his historic accomplishment.

Question 7: 31. When did Charles meet Anne Morrow?

• Before he took off from Long Island.
• Before Charles worked with Dr. Carrel.
• After World War II.
• While designing the 747. (Correct answer)
• When he was 30 years old.

Correct answer: While designing the 747.

According to the specific passage from which this question is derived, Charles Lindbergh met Anne Morrow during the period when he was involved in designing the 747 airliner. This detail indicates a unique timeline presented in the text, linking their meeting to his later engineering contributions, rather than the more commonly known historical timeline.

Question 8: 33. What event happened last?

• Lindbergh patented an artificial heart.
• The Lindberghs mapped a route to the Orient.
• Lindbergh helped design the 747 airliner. (Correct answer)
• Lindbergh flew 50 combat missions.
• Lindbergh was finally given an honorary degree from college.

Correct answer: Lindbergh helped design the 747 airliner.

Chronologically, Charles Lindbergh's involvement in the design of the Boeing 747 airliner occurred in the 1960s, which was a later period in his life. His earlier achievements, such as patenting an artificial heart (1930s), mapping routes to the Orient (1930s), and flying combat missions (WWII, 1940s), all predate his work on the 747. Therefore, helping design the 747 was the last event among the choices.

Question 9: 34. These instructions show you how to...

• Read a meter. (Correct answer)
• Turn the dials of a meter.
• Install a gas meter.
• Repair a water meter.
• Be prepared for outside employment.

Correct answer: Read a meter.

The subsequent questions (Q5, Q6, Q7) specifically ask about reading meter dials, recording figures, and marking off units. These details strongly indicate that the preceding instructions were focused on the practical process of how to accurately interpret and record readings from a meter. The other options describe different actions than simply interpreting the displayed figures.

Question 10: 35. Always read the meter dials...

• From top to bottom.
• From right to left.
• From left to right.
• From the small to the large dial.
• From the large dial to the small dial.

The correct answer for this question is missing from the provided information. Without the designated correct option, it is impossible to provide a specific explanation for why a particular method of reading meter dials (e.g., left to right, right to left) is the correct one according to the passage's instructions.

Question 11: 36. As you read the first dial, record the figures...

• On the smaller dial.
• The pointer is approaching.
• The pointer has just passed. (Correct answer)
• At the top.
• At the bottom.

Correct answer: The pointer has just passed.

When reading a meter with multiple dials, especially those with pointers, it is crucial to record the number that the pointer has *just passed*. If a pointer is positioned between two numbers, you always take the lower number (the one it has already moved beyond) to ensure an accurate and conservative reading of consumption, preventing overestimation.

Question 12: 37. When you have finished reading the meter, mark off...

• The number of units recorded. (Correct answer)
• The figures on the small dial.
• The total figures.
• All the zero marks.
• The last reading of the month.

Correct answer: The number of units recorded.

After accurately reading all the dials on a meter, the primary objective is to determine the total consumption, which is represented by the number of units recorded. Marking off this final figure allows for precise tracking of usage over time and is essential for calculating charges, rather than just noting individual dial figures or zero marks.