机械搅拌型微生物细胞生物反应器有哪些部分组成？
参考答案：
主要由罐体、控温部分、搅拌部分、通气部分、进出料口、测量系统和附属系统等组成
Consider a $10000000 1-year quarterly-pay swap with a fixed rate of 4.5 percent and a floating rate of 90-day London Interbank Offered Rate (LIBOR) plus 150 basis points. 90-day LIBOR is currently 3 percent and the current forward rates for the next four quarters are 3.2 percent, 3.6 percent, 3.8 percent, and 4 percent. If these rates are actually realized, at the termination of the swap the floating-rate payer will:（）
A. pay $20000.
B. pay $25000.
C. receive $12500.
后三点式起落架的飞机着陆滑跑抱紧驾驶杆主要是为了？（） 。
A、防止飞机飘起
B、增大迎角以增大阻力
C、压住尾轮，保证滑跑方向防止倒立
