The concept of 'digital twins' has gained significant traction in industrial engineering, referring to virtual replicas of physical systems that are continuously updated with real-time data. These dynamic models enable predictive maintenance, reducing downtime by anticipating equipment failures before they occur. However, the implementation of digital twins is not without challenges. High-fidelity simulations require substantial computational resources and vast datasets, which can be prohibitively expensive for small-to-medium enterprises. Moreover, the reliance on interconnected sensors raises cybersecurity concerns, as a breach could compromise both the virtual model and the physical asset it mirrors. Despite these obstacles, proponents argue that the long-term efficiency gains and cost savings justify the initial investment, particularly in sectors like aerospace and energy, where unplanned outages carry severe economic and safety repercussions.
❓ According to the passage, what is a major drawback of implementing digital twins?
A. A. They are only useful for aerospace and energy sectors.
B. B. They require extensive computational power and large data sets.
C. C. They eliminate the need for physical sensors.
D. D. They increase the frequency of equipment failures.
✅ 正确答案
B. They require extensive computational power and large data sets.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Be wary of absolute statements (all, always, never) — usually wrong
Pay attention to content after transition words (however, but, yet)
Manage time: about 20 minutes per passage; skip difficult questions first