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【简答题】
普通碳素结构钢规定牌号有Q195、Q215、Q235和（ ）四种。
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反馈参考答案：
举一反三
【单选题】Try new sports, games, and other activities ________new foods.You'll grow stronger, play longer, look and feel better! [ ]
A.
such as
B.
as well as
C.
or
D.
as well
【单选题】In____ scavenging he incoming air is directed upwards and the exhaust gases travel down and out of the exhaust ports at the opposite side of the cylinder.
A.
cross
B.
loop
C.
aspirate
D.
uniflow
【单选题】In ________scavenging the incoming air enters at the lower end of the cylinder and exhaust gases are forced out at the top.
A.
across
B.
loop
C.
aspirate
D.
Uniflow
【简答题】The critics______(只有无情的批评) for the new play.
【单选题】In ____ scavenging the incoming air is directed upwards and the exhaust gases travel down and out of the exhaust ports at the opposite side of the cylinder.
A.
cross
B.
aspirated
C.
Loop
D.
uniflow
【单选题】In ________scavenging the incoming air is directed upwards and the exhaust gases travel down and out of the exhaust ports at the opposite side of the cylinder.
A.
cross
B.
loop
C.
aspirate
D.
Uniflow
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