题型: 蒋经国在苏联求学时期曾在日记中写道:“午饭后……我和几个朋友走到街上去买东西。莫斯科没有大的商店,满街都是小商人的店铺,商店有国家与商人开办之别。”据此可知当时苏联实行A.战时 * * 主义政策B.新经济政策C.高度集中的计划经济D.农业集体化 查看答案
题型:单项选择题 A1/A2型题 对强直性脊柱炎髋关节已强直者,手术治疗能达到术后不太痛,且活动度较好的术式是()A.贝氏截骨术B.金属杯成形术C.头、臼成形术D.全髋人工关节置换术E.双杯成形术 查看答案
题型:选择题 _____the danger from enemy action, people had to deal with a severe shortage of food, clothing, fuel, and almost everything. [ ]A. As soon as B. As long as C. As far as D. As well as 查看答案
题型:填空题 把一重为5N的木块放在水平桌面上,弹簧秤水平地向右拉木块,使木块保持匀速直线运动时,弹簧秤的读数变为2N,此时木块受到的是______摩擦力,大小是______,动摩擦因数μ=______. 查看答案