问题
单项选择题
不是肌醇气相色谱法衍生剂是（）。
A、三甲基氯硅烷
B、六甲基二硅胺烷
C、N，N-二甲基甲酰胺
D、乙酰氯甲烷
答案
参考答案：D
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不是肌醇气相色谱法衍生剂是（）。
A、三甲基氯硅烷
B、六甲基二硅胺烷
C、N，N-二甲基甲酰胺
D、乙酰氯甲烷
参考答案：D
| 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. |
(5)
A．ant
B．last
C．next
D．second