打印机故障不包含的是（）
A、打印机初始化失败
B、打印测试成功，但是没有出票
C、打印机不切纸
D、扫描仪初始化失败
参考答案：D
风疹病毒易感者主要是（）
A.男性
B.儿童
C.女性
D.成人
E.育龄期妇女
An analyst gathers the following information about a company’s common stock: · 1 January 2009180000 shares outstanding · 1 June 2009 60000 shares issued · 1 August 2009 2-for-1 stock split · 31 December 2009 480000 shares outstanding To calculate earnings per share for 2009, the company’s weighted average number of shares outstanding is closest:（）
A. 215000.
B. 420000.
C. 430000.
