慢性心功能不全最常见的原因是（） A.呼吸道感染 B.快速心律失常 C.过度

小题1:We were talking on the phone and then the line went dead      .  (突然)

小题2:If        die, life is a broken winged bird that can not fly. (梦想)

小题3:My cousin will celebrate his         birthday with his classmates at his college. (二十)

小题4:How would you          colour to a blind person? (解释)

小题5:One of the keys to         business is careful planning. (成功的)

小题6:We ought to learn to take care of         after entering the high school. (we)

小题7:I have written all the         names on this piece of paper. (win)

小题8:To lose one's life is a tragedy, but to lose one's soul is even      . (bad)

小题9:The teahouse is a popular place for local people to treat their important        .  (visit)

小题10:Her father arranged for her to have an       on her brain. (operate)

2005版第五套人民币100元的冠字号码具有（）。

A.凹印特征

B.荧光特征

C.光变特征

D.磁性特征

图示电路，u_c1（0_-）=10V，u_c2（0_-）=0V，当t=0时闭合开关S后，u_c1应为（）。

A．6.67(1-e^-t/τ)V

B．10e^-t/τV

C．10(1-e^-t/τ)V

D．(6.67+3.33e^-t/τ)V

生活纪律是党员在日常生活和社会交往中应当遵守的行为规则，涉及党员（）等各个方面，关系党的形象。

A、个人品德

B、家庭美德

C、社会公德

D、生活品质

下列哪个关于黑体辐射谱的描述公式会在紫外（高频）发散？（）

A、瑞利-金斯公式

B、维恩公式

C、普朗克公式

D、爱因斯坦公式