【多选题】机房照明应符合下列()要求?
A.
机房的主要光源应采用日光灯。照明要求:离地0.8米水平面上≥150Lux
B.
照明电应与工作电(设备用电及空调用电)分开布放
C.
机房内应安装带有接地保护的电源插座,其电源应与照明电源同一回路
D.
不允许有太阳光直射进机房,所有窗户内侧贴深兰色阻燃玻璃纸进行避光处理
【多选题】我们倡导的富强是( )。
B.
好比国之脊梁,挺起国家的腰杆,护卫民众的福祉
【单选题】According to the speaker, why was it a problem for mail carriers to cross rivers in 1600s?
A.
Boats used on rivers were extremely crowded.
B.
The current was too swift for boats to cross easily.
C.
The bridges were too weak to carry the weight of a stagecoach.
D.
Ferry service was infrequent.
【简答题】主机房内的主要照明光源应采用_____________,其镇流器的谐波限值应符合国家标准《电磁兼容 限值 谐波电流发射限值》 (GB17625.1) 的规定,灯具应采用_______、________的控制措施。
【简答题】Why does the speaker think a buffet lunch is a good idea? [A] It's relaxing. [B] It's quick. [C] It's cheap. [D] It's tasty.