生球必须具有一定抗压承受热固结过程各种应力、（）、抽分负压。
参考答案：料层压力
慢性ITP血小板破坏的主要场所是（）
A.血循环中
B.肝脏
C.脾脏
D.肺脏
E.骨髓
A $500 investment and a $1, 500 investment have a combined yearly return of 8.5 percent of the total of the two investments. If the $500 investment has a yearly return of 7 percent, what percent yearly return does the $1, 500 investment have
