— ______ does your father do morning exercises?

— Hardly ever.[ ]

A. How

B. How often

C. When

D. What time

《电力企业设备典型消防规程》规定，防火重点部位和场所应按企业实际情况装设火灾自动报警装置或固定灭火装置，并使其符合设计技术规定。