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【多选题】
下列句子属判断句的是( )。A.
则吾乃也。(战国策.)
B.
我，六辔如丝。(诗经.小雅.皇皇者华)
C.
臣本布衣，躬耕于。(：前出师表)
D.
其志洁，其行廉。(史记.屈原列传)
E.
积土成山，风雨兴焉。(荀子.劝学)
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参考解析：
知识点：
皮皮学刷刷变学霸
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【多选题】Why is ATP-driven Na + or H + important?
A.
In the plasma membrane of an animal cell, an ATP-driven Na + pump transports Na + out of the cell against its electrochemical gradient; this Na + can then flow back into the cell, down its electrochemical gradient, through various Na + gradient-driven pumps.
B.
The influx of Na + through these gradientdriven pumps provides the energy for the active transport of many other substances into the cell against their electrochemical gradients. If the ATP-driven Na + pump ceased operating, the Na + gradient would soon run down, and transport through Na + gradient-driven pumps would come to a halt.
C.
For this reason, the ATP-driven Na + pump has a central role in the active transport of small molecules across the plasma membrane of animal cells.
D.
Plant cells, fungi, and many bacteria use ATP-driven H + pumps in an analogous way: in pumping H + out of the cell, these proteins create an electrochemical gradient of H+ across the plasma membrane that is subsequently harnessed for solute transport.
【多选题】关于机械防烟系统的主要性能参数验收说法正确的是。
A.
任选一层模拟火灾，打开送风口，联动启动加压送风机，当着火层封闭楼梯间、防烟楼梯间、前室、合用前室、消防电梯前室及封闭避难层(间)门打开时时，测试相邻层的防烟楼梯间、前室、合用前室、消防电梯前室及封闭避难层(间)的余压
B.
从走廊到前室再到楼梯间的余压值应依次呈递增分布
C.
前室、合用前室、消防电梯前室、封闭避难层(间)与走道之间的压差应符合要求
D.
封闭楼梯间、防烟楼梯间与走道间压差应符合要求
【多选题】防烟排烟系统施工调试完成后，需要进行竣工验收，以下关于机械防烟系统竣工验收的说法，正确的是（）。
A.
防烟系统施工调试完成后，由施工单位组织进行竣工验收
B.
任选一层模拟火灾，打开送风口，联动启动加压送风机，当封闭楼梯间、防烟楼梯间、前室等门全闭时，从楼梯间到前室再到走廊的余压值应依次呈递减分布
C.
送风机、排烟风机应能正常手动启动和停止，动作信号应在消防控制室显示
D.
活动挡烟垂壁、自动排烟窗应能正常手动开启和复位、动作信号应在消防控制室显示
E.
测试各个门洞处的风速不应小于0．7m／s
【单选题】启动风烟系统时,应依次启动()
A.
送风机、引风机、空气预热器、一次风机
B.
引风机、送风机、一次风机、空气预热器
C.
空气预热器、引风机、送风机、一次风机
D.
空气预热器、一次风机、送风机、引风机
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