医院感染的传播途径主要有()
A.接触传播
B.空气传播
C.水、食物
D.医源性传播
E.生物媒介传播
参考答案:A, B, C, D, E
Other factors being equal, which of the following values for the required rate of return and dividend growth rate, respectively, would produce the highest earnings multiplier for a stock Required rate of returnDividend growth rate ()
A. 16. 3% 7.6%
B. 17.2% 8.9%
C. 19.5% 11.6%
煤仓、给煤机系统和提升系统应设置()。
A、照明
B、闭锁
C、信号