单选题
Improvements include lower mass, wider operating temperature range, cost savings, and a flexible modular design to meet future requirements.
【正确答案】
A
【答案解析】[分析] 形容词辨析
flexible 柔韧性,灵活的,柔软的,能变形的,可通融的;A.adaptable 能适应的,可修改的;B.immiscible 不能混合的,不融合的;C.accessible 易接近的,可到达的; D.counterfeit伪造的,假冒的;因此A为答案。