亮亮想制作一个圆锥模型，这个模型的侧面是用一个半径为9cm，圆心角为240°的扇

没立地方性公募基金会必须到账原始货币资金不低于( )。

A．200万元人民币

B．400万元人民币

C．800万元人民币

D．1000万元人民币

E．1200万元人民币

Inside the computer, the operation system (of another software module called a data communication (71) )must decide which program will get control next. Each program remember, is associated (72) . a particular front -end port. If a program’s data have not yet reached its front - end buffer, there is no point giving that program control. Thus the data communication monitor sends its own (73) signal to the front -end devices next port is polled. Note that the (74) computer speed. The computer never has to wait for a terminal or a communication line. Instead, it is the expressive front - end processor that waits for the slower system (75) to respond.

（72）处填（）。

A．with

B．on

C．in

D．upon

革兰氏染色操作的关键步骤是（）。

可见分光光度计的光源

A．汞灯或氙灯
B．钨灯
C．氢灯
D．能斯特灯
E．紫外光灯

对硫化氢作用最敏感的人体组织是（）部位。

A.手和脸

B.脑和粘膜的接触

C.呼吸系统和神经系统