说出青藏高原气候资源的优势和劣势。
优势：光照条件好；劣势：热量差
青藏高原海拔高，空气稀薄，光照充足；但是，正是由于海拔高，热量条件差，形成典型的高寒气候。
殿本
A 6x19 wire rope would be（）.
A.6 inches in diameter and 19 fathoms long
B.6 inches in circumference with 19 strands
C.6 strands with 19 wires in each strand
D.19 strands with 6 wires in each strand
