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问题 问答题 简答题

锅炉汽水系统哪些地方装有空气门？

答案

参考答案：

汽包、顶过进口联箱，高过进口联箱，侧包墙过上联箱，尾部竖井前包墙上联箱，屏过进口联箱，再热器出口联箱，省煤器出口联箱。

单项选择题

Personal computers are used by one person at a time. The largest personal computer, or PC.S, can fit on a (1) . Some of these (2) have more than one microprocessor. (3) the primary processor, which is a general-purpose device, a PC may have one or more processors to (4) special kinds of work. Some machines, (5) , have maths processors, others have graphics processors to help process photographs and other illustrations. Still others have (6) processors.

Office workers also use PCS that are not (7) to a network. These machines are used for (8) tasks as word processing, performing financial calculations, and organizing and (9) bodies of information called databases. People use PCS at (10) for some of the same kinds of tasks. They use word processing programs for (11) communication, financial software for household budgets. Individuals also use their home computers to play (12) and to communicate (13) the internet.

Small, portable PCS are (14) with people who often work away from their desks. The (15) include laptop computers, which can be (16) on the lap; notebook computers, which are about the (17) of a loose leaf notebook; and palmtop, or handheld computers, which can be operated while (18) in the hand. Laptop and notebook computers have the same (19) as desktop computers. Palmtop computers have less power but still (20) some advanced capabilities. For example, they can process household financial data.

17（）

A.weight 

B.size 

C.length 

D.width
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单项选择题

在级配碎石路拌法基层施工中，若

①未筛分碎石运输与摊铺；

②洒水使碎石湿润；

③拌合并补充洒水；

④整型。

如下选项中排序正确的是（）。

A.①②③④

B.②①③④

C.①②④③

D.①③②④
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