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【单选题】
绘图铅笔的笔芯有( )之分,一般以标号HB的为中型,B-6B的逐渐转软,铅色浓黑,污脏。A.
长短
B.
软硬
C.
粗细
D.
软硬和粗细
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反馈参考答案：
举一反三
【单选题】ICMP is used for( )?
A.
Reliable data transfer
B.
Error reporting
C.
Flow control
D.
Congestion contro
【单选题】Which Layer 4 protocol is used for a Telnet connection between two Ezonexam routers?
A.
IP
B.
ICMP
C.
DNS
D.
TCP
E.
UDP
F.
RTP
【简答题】离心泵铭牌上的标明的流量是指 ______ 时的流量。
【单选题】ICMP is primarily used for ( )
A.
error and diagnostic functions
B.
addressing
C.
forwarding
D.
none of these
【单选题】ICMP is used for( )?
A.
Reliable data transfer
B.
Error reporting
C.
Flow control
D.
Congestion control
【多选题】Which of these protocols is used for VPNs? (Choose all that apply.)
A.
PPTP
B.
WEP
C.
SSTP
D.
L2TP
E.
ICMP
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