精密机床其加工精度若控制在0．01mm以内，其室温应控制在（）范围内。A.（15±1 发布时间：2019-11-04 03:59 │ 来源：www.tikuol.com 题型：单项选择题 问题： 精密机床其加工精度若控制在0．01mm以内，其室温应控制在（）范围内。A.（15±1）℃B.（20±1）℃C.（25-4-1）℃D.（30±1）℃
题型：单项选择题 阅读理解。 Sunny English Club For students 16:00 ~ 18:00 Every Saturday 200 yuan a month 9 Zhou Yu Street Tel: 3786290 Foreign teachers, English songs and films and more!Ocean Museum 9:00~17:00 From Thursday to Sunday ticket: 50 yuan 132 Xue Yuan Street Tel: 5439871 Show you a full picture of sea lives!Health Centre 9:00 ~ 17:00 16 Yong Le Street Tel: 3801451 Free examinations for those over 70Give you good advice to keep healthy!1. Sunny English Club is for ______.A. nurses B. policemen C. businessmenD. students 2. You will pay ______ if you want to stay in the English club for half a year. A. 300 yuan B. 600 yuan C. 1,200 yuan D. 2,400 yuan 3. You can visit Ocean Museum ______. A. on Saturday B. on WednesdayC. on Monday D. any time 4. One can get free examinations in Health Centre if he is ______. A. 9 B. 17 C. 67 D. 73 查看答案
题型：单项选择题 地层防潮设防潮层的做法有两种，一种是在混凝土垫层上设防潮层，再在防潮层上做地面面层；另一种做法是在地面的基层上铺一层粒径均匀的卵石或碎石、粗砂等，然后再在其上做混凝土垫层和地面面层。 查看答案