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问题 判断题

塔釜热源流量阀全开，塔釜仍加不上热，可判断再沸器需切出清理。

答案

参考答案：错

解析：要根据塔的各项操作参数、热剂的压力、热剂的温度、及热剂的量来判断再沸器是否需切出清理。

问答题

试说明SPADE方式的含义。
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单项选择题

College librarian: Until three years ago, nonstudents used the library without charge. Then, because of our decreased budget, they were asked to pay $100 per year. Nevertheless, about 150 nonstudents still use the library without paying. We will therefore gain financially if we hire a guard to identify nonstudents and ensure that they have paid the fee.
Which of the following would it be most important to know in order to evaluate the librarian’s conclusion

A．The number of students who use the library annually.

B．The library’s budget this year.

C．Whether the library has installed an expensive computerized cataloging system.

D．How much the library’s budget was decreased three years ago.

E．(E) The annual cost to the library of hiring a guard.
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