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【单选题】
常作为生活冷水管使用,完全能达到食品卫生标准的要求,作为冷水管道可在70°以下长期使用。管材刚性、抗冲击性能较差,抗紫外线性能差,在阳光下易老化,不适于在室外明装敷设。该管道属于( )。A.
三型聚丙烯(PP-R)管
B.
交联聚乙烯(PE-X)管
C.
聚丁烯(PB)管
D.
工程塑料(ABS)管
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举一反三
【单选题】Could you ______ me to the railway station, please?
A.
show
B.
direct
C.
lead
D.
indicate
【单选题】How do you write the road sign "去海边" in English?
A.
go the seaside
B.
toward the seaside
C.
to the seaside
D.
on the seaside
【简答题】May I take two or ______________ young children free?
【单选题】May I take two or ______________ young children free?
A.
much
B.
many
C.
more
D.
most
【单选题】– May I take your order, please? -- Yes, I ’ d like two ______ of juice, please.
A.
glasses
B.
glass
C.
glasss
【简答题】Please indicate the value of the contents.
【单选题】How do you write the roadsign “ 去海边 ”in English?
A.
Go the seaside
B.
Toward the seaside
C.
To the seaside
D.
On the seaside
【简答题】Please indicate arrow parts.
【单选题】May I take two or ______________ young children free?
A.
more
B.
less
C.
a little
D.
a lot
【单选题】How do you write the current candidate configuration to the permanent storage media?（）
A.
[edit] user@router# save /var/tmp/current.conf
B.
[edit] user@router# write /var/tmp/current.conf
C.
[edit] user@router# commit /var/tmp/current.conf
D.
[edit] user@router# dump /var/tmp/current.conf
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