Read the following passage from a technical safety manual. Based on the examples and explanation in the text, fill in the blank to complete the summary statement.
Answer:Passage:
During electrical maintenance, technicians must install reliable insulators—such as rubber sleeves, porcelain brackets, and heavy plastic sheathing—around exposed wiring. These protective coverings prevent electric current from escaping conductive lines, thereby safeguarding workers from severe shock.
Based on the examples and explanation provided, the word "insulators" refers to materials used to 【block】 the flow of electric current.
During electrical maintenance, technicians must install reliable insulators—such as rubber sleeves, porcelain brackets, and heavy plastic sheathing—around exposed wiring. These protective coverings prevent electric current from escaping conductive lines, thereby safeguarding workers from severe shock.
Based on the examples and explanation provided, the word "insulators" refers to materials used to 【block】 the flow of electric current.
Answer
block (or prevent / stop / resist / inhibit)
The passage provides illustrative examples of non-conductive materials (rubber sleeves, porcelain brackets, and plastic sheathing) and explicitly clarifies that they 'prevent electric current from escaping.' Therefore, in this context, 'insulators' refers to materials that block, prevent, or stop the passage of electricity.
Step-by-Step Solution
Key Concept
Inferring vocabulary meaning from explicit examples and functional explanatory clauses within a passage.
Estimated Time:45s