下列不属于公用、辅助及厂外配套工程的是( )。
A．供电与通讯
B．科研和分析化验
C．节能与节水
D．给水排水
参考答案：C
At first the institute refused to purchase the telescope, but this decision was _____ revised.
A．occasionally
B．consequently
C．successively
D．subsequently.
施用有机肥应注意那些问题？
