【单选题】资本主义的基本矛盾是
B.
生产无限扩大的趋势与有支付能力的需求相对缩小之间的矛盾
C.
各个企业内部生产的有组织性与整个社会生产的无政府状态之间的矛盾
D.
生产社会化与生产资料资本主义私人占有之间的矛盾
【判断题】English words may fall into the basic word stock and nonbasic vocabulary by usefrequency.
【单选题】____ has been reported _____ sales of beef in China will increase.
【判断题】The sales for beef have been flat in recent years.
【简答题】We should simultaneously sign two contracts, one sales contract for beef and mutton, and the other contract of equal value for the purchase of cotton.
【多选题】根据喷头的常开、常闭形式,自动喷水灭火系统可分为闭式系统和开式系统,其中闭式系统有( )。