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【单选题】
What does the word “proverb” mean?A.
Familiar sayings.
B.
Shakespeare’s plays
C.
Complaints.
D.
Actors and actresses
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参考解析：
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皮皮学刷刷变学霸
举一反三
【多选题】Which two QoS classification and marking statements are true？（）
A.
In a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.
B.
In an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP field
C.
In an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.
D.
The differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.
E.
The 802.10 standard uses a three bitfield referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
【简答题】翻译:Si se trata de pedido considerable, podemos bajar un 2% de la oferta.
【单选题】根据酸碱质子理论,氨水离解时的酸和碱分别是
A.
NH 4+ 和 OH -
B.
H 2 O 和 OH -
C.
NH 4 + 和 NH 3
D.
H 2 O 和 NH 3
【单选题】曹操《蒿里行》一诗,描绘的是以下哪种场景?
A.
汉时官员劝课农桑的画面
B.
北方少数民族入侵中原的战争惨状
C.
文化界百家争鸣的盛况
D.
汉末军阀混战导致民不聊生的状况
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