管理的核心是( )。
A．实现决策目标
B．效益最大化
C．组织业务活动
D．处理好人际关系
参考答案：D
for his expert advice, John is often asked to help others with their personal affairs.
A．Having known
B．Being known
C．Known
D．Knowing
下列物质的按熔沸点升高顺序排列的是
A．Li Na K Rb
B． NaF NaCl NaBr NaI
C．F2 Cl2 Br2 I2
D．H2O H2S H2Se H2Te
