问题
单项选择题 A1/A2型题
LD1/LD2的比率一般用何种方法测定最为方便（）
A.层析法
B.电泳法
C.免疫沉淀法
D.离心法
E.酶免法
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
LD1/LD2的比率一般用何种方法测定最为方便（）
A.层析法
B.电泳法
C.免疫沉淀法
D.离心法
E.酶免法
参考答案：A
| 35．Applications put computers to pratical business (1) , but below the (2) it’s the heart of an operating system—the kernel that provides the technical wizardry to juggle multiple program, connect to networks and store (3) . A traditional kernal provides all the functions for applications. The kemal (4) memory, I/O devices and parcels out processor time. The kernel also supports security and fault (5) , which is the ablity to recover automatically when parts of the system fail. |
(2)
A．add
B．added
C．adding
D．addition