在综合布线系统中,一个办公室的几个工作站可合用同一条接地导线,应选用绝缘()导线。
A.铁
B.铜
C.铝
D.镍
参考答案:B
单句语法填空,每空只填一词
小题1:The settlement is home to nearly 1, 000 people, many of left their village homes for a better life in the city.
小题2:To stay awake, he finished a cup of coffee and ordered .
小题3:The church tower which _______ _______ (restore) will be open to tourists soon. The work is almost finished.
小题4:My uncle hesitated for a long time _______ he decided to buy a flat, as he was not quite sure whether the price of the house would go up or not.
小题5:Different methods to touch the keys will result _______ different display of the color.
截止今年3月末,我国银行业金融机构已向四川、陕西、甘肃 三省受灾地区发放救灾款205359000000元,改写成以“亿”作 单位的数是( )亿元;其中四川省一千六百八十九亿八千五百万元,这个数写作( )元。