| The molecules of carbon dioxide in the
Earth’s atmosphere affect the heat balance of the Earth by acting as a one-way
screen. Although these molecules allow radiation at visible wavelengths, where
most of the energy of sunlight is concentrated, to pass through, they absorb
some of the longer-wavelength, infrared emissions radiated from the Earth’s
surface, radiation that would otherwise be transmitted back into space. For the
Earth to maintain a constant average temperature, such emissions from the planet
must balance incoming solar radiation. If there were no carbon dioxide in the
atmosphere, heat would escape from the Earth much more easily. The surface
temperature would be so much lower that the oceans might be a solid mass of
ice. Today, however, the potential problem is too much carbon dioxide. The burning of fossil fuel A. concentrated at visible wavelengths B. absorbed by carbon dioxide molecules C. absorbed by atmospheric water vapor D. reflected back to space by snow and ice [判断题]测量介质损耗时不受电源频率变化的影响。
A.正确 B.错误 [判断题]油脂蛋糕的重量、大小、形状等,都影响着油脂蛋糕在烘烤时的温度、时间,所以要根据制品要求,正确选择烘烤温度及时间。( )
A.正确 B.错误 [单项选择]急诊室抬来25岁妊娠39周初产妇，家属代述乡医院诊断为肩先露，嘱去大医院处理
。经检查，诊断为嵌顿性肩前位，脱出的手确认为胎儿右手，此时的腹部检查结果应是（）
A. 胎背朝向产妇腹壁，胎头在产妇腹壁左侧 B. 胎背朝向产妇腹壁，胎头在产妇腹壁右侧 C. 胎儿肢体朝向产妇腹壁，胎头在产妇腹壁左侧 D. 胎儿肢体朝向产妇腹壁，胎头在产妇腹壁右侧 E. 以上都不是 [判断题]除规范另有规定外，风管和设备的保温材料，消声材料及其粘贴剂，应采用不燃烧材料或难燃烧材料。
A.正确 B.错误 [多选题] 氢气是()的气体。
A.无色 B. 无臭 C. 无味 D. 无毒 E. 易燃 [单项选择]东南亚和大洋洲国家馆、国际组织馆被规划布置在（）片区。
A. A B. B C. C [多选题]《安徽农村商业银行系统客户信用等级评定操作实施细则》规定，评级发起人应在充分（ ）的基础上填写客户信用评级所需材料,并将相关资料报送评级复核人。
A.调查 B.分析 C.总结 D.核实 [单选题]下列等式可用于并联电路相关计算的是( )。
A.I总=I1+I2+I3…+Ii B.I总=I1=I2=I3…=Ii C.R总=R1+R2+R3…+Ri D.V总=V1+V2+V3…+Vi [单选题]拆模作业应按()，先拆非承重部分、后拆承重部分的原则逐一拆除。
A.后支先拆、先支后拆，先拆侧模、后拆底模 B.后支先拆、先支后拆，先拆底模、后拆侧模 C.后拆先支、先支后拆，先拆侧模、后拆底模 D.先支先拆、后支后拆，先拆侧模、后拆底模 E.lue [名词解释]效用价值论
[单选题]党的十九大报告强调要深化国防科技工业改革。形成军民融合深 度发展格局,构建( )的国家战略体系和能力。
A.一体化 B.智能化 C.联合化 D.信息化 [判断题]一个触发器能存储一个一位二进制数。( )
A.正确 B.错误 我来回答: 提交
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