单选题
An engineer is needed by the company to manage the work of installation teams, and to provide engineering assistance when problems occur.
【正确答案】
D
【答案解析】[解析]本题的关键在于两个动词不定式和of短语的理解，两个动词不定式结构作need的目的状语。manage the work of installation teams译作“领导安装小组的工作”比较恰当。