在管线综合中，管线之间或管线与建、构筑物之间的水平距离，除要符合技术、卫生、安全等要求外，还须符合哪项有关规定

A．国防

B．人防

C．消防

D．防灾

The following two questions refer to the following passage:

A prestigious private high school has made available to local families a tuition prepayment plan to ease the burden of paying the school’s hefty tuition when a student matriculates. The plan allows parents of children under three years old to reserve a spot for their child at the school by making a payment of one-fourth of the current annual tuition for the high school. The parents then make an identical payment every year for the next 15 years, and the student’s full four-year tuition is considered paid in full, regardless of how much the regular tuition payments have risen in the intervening years.

Under which of the following circumstances would taking part in the prepayment plan NOT be advisable for parents ？（）

A. If the tuition at the school has risen an average of 4 percent per year for the last twenty years

B. If the child in question is particularly talented at math, but the high school is more known for its advanced humanities programs than its math program

C. If the parents of the child in question are uncertain that they will reside in the state for more than 10 years

D. If the school has an arrangement with the local university whereby students can take courses at the University if they have surpassed the level of courses offered at the high school

E. If the school offers athletic scholarships to a small number of talented athletes