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问题 单项选择题

引进浅冷装置制冷系统启动，应将（）调到最小位置，打开阀XV-5201、阀XV-5202。

A.放空控制阀

B.入口控制阀

C.计量控制阀

D.排量控制阀

答案

参考答案：D

单项选择题

For users, microkernel technology promises (90) , compact and sophisticated operating systems that are typically (91) across a range of hardware platforms. These operating systems will be customizable to let users run multiple operating system and application "personalities" on top of a single microkernel (92) .

Microkernel based systems can provide this flexibility because the core operating system functions are (93) from the large number of utilities, features and extensions that are layered on top of them. As a result, updating and maintaining operating system is easier, since developers don’t have to modify the (94) every time they must acid a new feature.

（92）是（）

A.bases

B.foundations

C.systems

D.foundation
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单项选择题

新中国成立初期实行的职称制度是（）

A.职务聘任制

B.职业资格制

C.职务任命制

D.职称评定制
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