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【单选题】
读下图,下列各点关系正确的是 ......................................................( )
A.
图中4点气压:A>B>C>D
B.
高空中空气由D处流向B处
C.
近地面A处温度高于C处
D.
A、B、C、D之间没有可能形成热力环流
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【单选题】阿司匹林抑制PG合成主要是通过抑制( )。 A.环氧酶
A.
脂氧酶
B.
磷脂酶A2
C.
过氧化物酶
【简答题】云计算的定义是什么?
【单选题】属于环氧化酶抑制剂的是
A.
华法林
B.
阿司匹林
C.
阿西单抗
D.
氯吡格雷
E.
磺达肝癸钠
【单选题】Why would a network administrator configure port security on a switch()。
A.
to prevent unauthorized Telnet access to a switch port
B.
to limit the number of Layer 2 broadcasts on a particular switch port
C.
to prevent unauthorized hosts from accessing the LAN
D.
to protect the IP and MAC address of the switch and associated ports
E.
to block unauthorized access to the switch management interfaces over common TCP ports
【单选题】Why would a network administrator configure port security on a switch?()
A.
To prevent unauthorized Telnet access to a switch port.
B.
To limit the number of Layer 2 broadcasts on a particular switch port.
C.
To prevent unauthorized hosts from accessing the LAN.
D.
To protect the IP and MAC address of the switch and associated ports.
E.
To block unauthorized access to the switch management interfaces over common TCP ports.
【单选题】电力市场营销中的电力市场是指()的现实购买者和潜在购买者的需求总和。
A.
电能
B.
电力
C.
电量
D.
电力产品
【单选题】阿司匹林具有抗血小板聚集作用,是因为阿司匹林可抑制血小板的
A.
磷脂酶A 2
B.
过氧化酶
C.
环氧合酶
D.
血栓素合成酶
E.
前列环素合成酶
【单选题】阿司匹林具有抗血小板聚集作用,是因为阿司匹林可抑制血小板( )
A.
磷脂酶A
B.
过氧化酶
C.
环氧化酶
D.
血栓素合成酶
E.
前列环素合成酶
【单选题】某日,黄某牵着狗在山坡上闲逛,偶遇平日与己不和的刘某,黄某即唆使其带的狗扑咬刘某,刘某警告黄某,黄某继续唆使狗扑咬刘某。刘某边抵挡边冲到黄某面前,拣起石块将其头部砸成轻伤,黄某见头上流血,慌忙逃走。从刑法理论上看,刘某的行为属于( )。
A.
紧急避险
B.
正当防卫
C.
防卫过当
D.
对象错误
【单选题】The network administrator has configured port security on a Ezonexam switch. Why would a network administrator configure port security on this Ezonexam device?
A.
To prevent unauthorized hosts from getting access to the LAN
B.
To limit the number of Layer 2 broadcasts on a particular switch port
C.
To prevent unauthorized Telnet or SSH access to a switch port
D.
To prevent the IP and MAC address of the switch and associated ports
E.
None of the above
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