保证心理健康的重要措施是（）。
A.讲究心理卫生
B.讲究生理卫生
C.讲究行为协调
D.讲究情绪稳定
参考答案：A
-- I’m sorry we ________ all the educational CD-ROMs. Can you come next week?
-- Please call me as soon as the latest one _________.
A．have sold well, comes out
B．have sold out, comes out
C．have sold well, is come out
D．have sold out, is come out
注水系统启动增压泵时PAL-A2082信号必须（）
A、启动
B、为最大值
C、为最小值
D、清除
