如图所示，四盏灯的额定功率均相同，额定电压都是110V，现都正常发光，若电源电压

阅读下面短文，根据短文内容及首字母提示补全文中所缺的单词，答案写在题后的横线上。

     "Sorry" is a word that people in Britain often say in their daily life.

     One day while I was (1)w_____  on the street, a young man ran by hurriedly, brushing (轻擦) against

my handbag. He continued his way, but turned (2)b_____  and said "sorry" to me. Even in a rush, he didn't

(3)f_____  to say "sorry". One day, after I bought some bananas, the shopkeeper was passing me the change,

but I wasn't ready for it and a coin dropped onto the ground. "Sorry, Madam," he said (4)w_____  bending to

pick it up. I was (5)s_____   why he said "sorry" to me. Another time, I stepped on a man's (6)f_____  at the

entrance to a cinema. At the same time, we (7)b_____ said "sorry".

     Slowly, I got to know that when something unpleasant happens in daily life, the British don't (8)c_____ 

much about who is wrong. If someone is in trouble, a "sorry" is always (9)n_____ . Perhaps that is

(10)w_____  I seldom see people quarrel on the buses or streets in Britain.

I went along thinking nothing ___________, just looking at things around me.

A．in brief

B．in doubt

C．in particular

D．in harmony

分析磨机通风不良的原因有哪些？

下列属于性早熟的情况有（）

A.男性10岁以前出现第二性征

B.女性8岁以前出现第二性征

C.男性9岁以前出现第二性征

D.女性10岁以前出现月经

E.女性11岁以前出现月经

软件开发离不开系统环境资源的支持，其中必要的测试数据属于______。

A．硬件资源
B．通信资源
C．支持软件
D．辅助资源