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【单选题】
School principals should not expect teachers, _______________ college, to deal with a large group of difficult children.A.
new from
B.
fresh from
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举一反三
【单选题】I _____ on a sofa because my grandparents have come for the weekend.
A.
slept
B.
was sleeping
C.
have slept
D.
am sleeping
【单选题】I ________ on a sofa because my grandparents have been here to spend the weekend.
A.
slept
B.
was sleeping
C.
have slept
D.
am sleeping
【单选题】已知2FSK信号的传码率为2000波特,所用的两个载波频率分别为2000Hz和4000Hz,则该信号的第一零点带宽为( )Hz。
A.
2000
B.
4000
C.
6000
D.
8000
【单选题】My grandparents have lived in a town near Nanjing . They enjoy their life in the town. A．for many
A.
My grandparents have lived in a town near Nanjing ____. They enjoy their life in the town. A．for many years ago
B.
since many years
C.
many years ago
D.
for many years
【单选题】已知某商业路段的样点地价分别为1000、1200、1120、1150、1100、1300、2000、1500元/m2。则该路段样点地价的中位数为( )元/m2。
A.
1150
B.
1175
C.
1200
D.
1296
【单选题】咳痰5天,医嘱给予氧气雾化吸入治疗,。执行操作时错误的是
A.
氧气雾化吸入器与氧气装置连接紧密，不漏气
B.
氧气湿化瓶内放1/2冷蒸馏水
C.
调节氧流量6～8L/min
D.
口含嘴放入患儿口中，嘱其紧闭口唇深吸气
E.
吸入完毕，先取下雾化器再关闭氧气开关
【单选题】某单层乙醇合成厂房，耐火等级为一级，建筑面积为2000m2。已知乙醇的闪点为13℃，沸点是78．3℃，熔点是-114．1℃，自燃点是423℃，则该厂房的火灾危险性类别为（）。
A.
甲类
B.
乙类
C.
丙类
D.
丁类
【简答题】简述4P组合,并结合所学知识谈谈你对市场营销的认识。
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