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问题 单项选择题

检查牙本质过敏症的主要方法是

A．温度刺激

B．化学刺激

C．探针检查

D．视诊叩诊

E．碘酊染色

答案

参考答案：C

解析：探针探诊牙面，发生特殊的酸胀痛感是检查牙本质过敏症的主要方法。

填空题

灰分中的钠和钒是造成锅炉受热面（）的有害盐类。
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单项选择题

A typical (11) language contains an applicative sub-language which approximates the mathematical abstractions of "timeless" functions applied to "spaceless’ values, where the actual operation sequences and use of storage space during expression evaluation are organized behind the (12) . In this setting, values are data structures of low volume, typically a few computer words or less, which means that an illusion of spacelessness can be realized by having (13) results during expression evaluation stored at the discretion of the language implementation, and effecting parameter (14) and (15) operations through value copying.

A．middle

B．intermediate

C．previous

D．final
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