井道电缆架应装在提升高度一半再加()m高度的井道上。
A、0.5
B、0.8
C、1.0
D、1.5
参考答案:D
Tom was so wild about computer games that he would stay online for ten hours _____every day.[ ]
A. in the end
B. in particular
C. on end
D. on purpose
扩展神经系统功能的是存储技术。