神州六号飞行速度每秒7.9千米可写成( )。
7.9千米/秒
一盏弧光灯的额定电压是40 V,正常工作时的电流是5A,如何把它接入电压恒为220 V的照明电路上,使它正常工作?
The British are not so familiar with different cultures and other ways of doing things, ___________ is often the case in other countries
A.as
B.that
C.so
D.it