|1-2|=2-1；
∵（19）6=6859，（328）6=784，
∴19＞328．
故答案为：2-1，＞．
尼可刹米的作用部位在：
A．直接兴奋延髓呼吸中枢B．脊髓C．大脑皮质D．中脑-边缘系统E．以上都不是
I could have offered you some help last weekend, but I _______ with my work at that time.
A．would be occupied
B．was occupying
C．had been occupied
D．was occupied
