问题
单项选择题
小儿易患化脓性脑膜炎，下列病因哪项不正确
A．病原菌侵入与发病年龄有关
B．小儿血脑屏障功能差
C．有长期应用糖皮质激素或免疫抑制剂病史
D．有与蛛网膜下腔相通的先天畸形
E．婴幼儿的神经髓鞘及锥体发育不成熟
答案
参考答案：C
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小儿易患化脓性脑膜炎，下列病因哪项不正确
A．病原菌侵入与发病年龄有关
B．小儿血脑屏障功能差
C．有长期应用糖皮质激素或免疫抑制剂病史
D．有与蛛网膜下腔相通的先天畸形
E．婴幼儿的神经髓鞘及锥体发育不成熟
参考答案：C
| 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．ciphertext
B．hypenext
C．plaintext
D．supertext