2 級標準解答
問1
１．A humidifier, comprising:a water tank removably mounted to a main part having ahumidified air outlet;
a water reservoir section for temporarily storing watersupplied from the water tank, the water reservoir section being
provided in the main section;a generally rectangular vaporizing filter for vaporizing
the water from the water reservoir section;a filter mounting part for holding the vaporizing filter,the filter mounting part being formed in the water reservoir
section;a blower for blowing air to the vaporizing filter; anda heater for heating air sent to the vaporizing filter fromthe blower, the heater being disposed in the vicinity of thevaporizing filter,
wherein the vaporizing filter includes a nonwoven fabrichaving a proportion of hydrophobic fibers higher than aproportion of hydrophilic fibers.
２．The humidifier according to claim 1, further comprising:a humidity-control means having a humidity sensor provided
in the humidified air outlet, and a controller for controllingthe heater based on an output from the humidity sensor.
問2
The method of the present invention may suitably be used formeasuring the size of particulate matters suspended in
atmospheric-air environment, and for analyzing the component
therein. If particulate matters, suspended in atmospheric air,having diameters of several micrometers or less are clearly
evaluated for the particle size distribution and the component
therein, identification of the emission source of theparticulate matters may be attained. Particulate matters having

particle size of 10 or less micrometers are called suspended
particulate matter (SPM). The particulate matters are known tobe suspended in atmospheric air for a long period of time, andalso to intrude into the human body, where they cause illnesses.
In particular, significant/considerable influence on the humanbody of the particulate matters (referred to as PM2.5) having
a particle size of 2.5 or less micrometers is a concern<.>
Analysis of inorganic components of the particulate matters has
generally been performed by applying inductive coupling typeplasma mass spectrometry (ICP-MS) for the particulate mattersdissolved in solutions containing acids or alkalis.
問3[Second Embodiment][0055]A second embodiment of the present invention will now bedescribed with reference to the accompanying drawings. Fig.
6 is a schematic illustration of an information station 201 inaccordance with the second embodiment of the present invention.
The second embodiment is different from the first embodimentin that the information station 201 is connected to a hydraulicturbine generator 250 so as to receive electric power from thehydraulic turbine generator 250 and to monitor the operationof the hydraulic turbine generator 250. The configuration of
the information station 201 will first be described briefly.
[0056 ]The information station 201 basically has the same
configuration and function as those of the information station
1 of the first embodiment described above. The description
therefore will be focused on features that discriminate thesecond embodiment from the first embodiment, without referringto the structural and functional features common to the firstembodiment. In FIG. 6, like reference numerals are used todenote the like or same components as those of the firstembodiment. Those skilled in the art will readily appreciatethat these components function in the same manner as those ofthe first embodiment. The information station 201 includes
components such as a camera 203, an antenna 204, a solar battery
206, and a secondary storage battery 209.