什么情况下吸风机备用冷却风机启动？
参考答案：
1）运行冷却风机故障跳闸
2）风机轴承温度大于80℃
We should express our love to our loved ones before their ears can still hear and their hearts
can still ______and made happier,not after they are gone.[ ]
A. be thrilled
B. excite
C. thrill
D. be excited
某上市公司计划发行新股。预测2006年度的每股收益2元，根据二级市场的平均市盈率拟定发行市盈率为15，按市盈率定价法确定的发行价格为（）元。
A．30
B．7.5
C．17
D．12
