以下不是脂质体与细胞作用机制的是()
A.降解
B.融合
C.内吞
D.吸附
E.脂交换
参考答案:A
After transferring a weight forward on a vessel,the draft at the center of flotation will().
A.change,depending on the location of the LCG
B.increase
C.decrease
D.remain constant
计算题:有一铜管拉伸前的长度是25mm,拉断后的长度为30.15mm,试求其延伸率是多少?