读岩石圈物质循环示意图,回答下题.
读拼音,写汉字
kǒng xì
píng zhàng
wú xiá
yǎng wò
____
zhuàn qián
jīng zhàn
kuǎn dài
zàn shǎng
已知m1+i=1-ni,其中m,n是实数,i是虚数单位,则m+n= ()