| Global warming is the gradual increase
of the temperature of the earth’s lower atmosphere as a result of the increase
in greenhouse gases since the industrial Revolution. The temperature of the
atmosphere near the earth’s surface is warmed through a natural process called
the greenhouse effect. Visible, shortwave light comes from the sun to the earth,
passing unimpeded through a blanket of thermal, or greenhouse, gases composed
largely of water vapor, carbon dioxide, methane, nitrous oxide, and ozone.
Infrared radiation reflects off the planet’s surface toward space but does not
easily pass through the thermal blanket. Some of it is trapped and reflected
downward, keeping the planet at an average temperature suitable to life, about
60°F (16℃). Growth in industry, agriculture, and transportation since t A. scientific predictions are accurate and trustworthy B. the effectiveness of the models simulating the climate is not yet proved C. observed climate changes is the representative of changes in global warming D. mankind is the only one who is to blame on the issue of global warming [单选题]供电单位或施工单位到用户工程或设备上检修（施工）时，工作票应由有权签发的（）签发。
A.供电单位 B.用户单位、施工单位或供电单位 C.用户单位或供电单位 D.施工单位或用户单位 [单项选择]The audience waited in ________ silence while their aged speaker searched among his notes for the figures he could not remember.
A. respective B. respect C. respectful D. respectable [单选题]下列选项中,属于叶菜类蔬菜品种的是( )
A.山药 B.莴笋 C.大葱 D.菜心 [单项选择]MMPI中的Ma量表是表示( )。
A. 躁狂 B. 男性化—女性化 C. 精神分裂 D. 抑郁 [单项选择]办报收入系数符合（）的条件叫做办报型报社。
A. ＞0.8 B. ≥0.8 C. ＜1.8 D. =0.8 [单选题]YSP118钢瓶的最大充装量为：( )
A.118kg B.49.5kg [单选题]道岔改道作业时,以( )为标准股。
A.导曲上股 B.导曲下股 C.直外股和导曲线上股 D.直内股和导曲线下股 [多选题]消防员对干部应当做到( )
A.尊重干部，服从领导和管理 B.忠诚老实，主动汇报思想 C.虚心接受批评，坚决改正错误 D.不当面顶撞，不背后议论 E.不搞极端民主化，不搞绝对平均主义 F.积极建言献策，主动协助干部做好各项工作 我来回答: 提交
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