“两岸猿声啼不住，轻舟已过万重山。”描写了放舟长江三峡的情景。诗句的作者是[ ]
A．李白
B．白居易
C．杜甫
D．苏轼
答案：A
. —Ken, , but your TV is going too loud.
—Oh, I ’m sorry. I’ll turn it down right now.
A. I’d like to talk with you B. I’m really tired of this
C. I hate to say this D I need your help.
有关电力电容器性能中的损耗角正切与有功损耗的关系描述正确的为（）。
A.损耗角正切越大，电容器相对有功损耗越小
B.损耗角正切越大，电容器相对有功损耗越大
C.损耗角正切越大，电容器发热较轻
D.损耗角正切不会随外施温度有所变化
