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【单选题】
下列牌号中属于碳素工具钢的是 。A.
45
B.
Q235
C.
T10
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举一反三
【简答题】all the time, It’s about time that, ahead of time, at any time, at the same time,
【单选题】It’s about time that people __ notice of what women did during the war.
A.
took
B.
take
C.
have taken
D.
will taken
【多选题】单向板肋梁楼盖按弹性理论计算时，对于板和次梁不论其支座是墙还是梁，均视为铰支座，由此引起的误差可在计算时所取的（ ）加以调整。
A.
跨度
B.
荷载
C.
弯矩值
D.
剪力值
【单选题】.It’s about a time _____ there were black slaves in North America.
A.
where
B.
when
C.
how
D.
that
【判断题】销的主要用途是固定零件之间的相互位置，并可传递不大的载荷。圆柱销经过多次装拆，其定位精度会降低。圆锥销的安装比圆柱销方便，多次安装对定位精度的影响也较小。
A.
正确
B.
错误
【单选题】It’s about time that he along well with his classmates.
A.
to get
B.
got
C.
have
D.
should
【单选题】It’s about time that the question _____ now.
A.
solved
B.
were solved
C.
be solved
D.
was solved
【多选题】单向板肋梁楼盖按弹性理论计算时，对于板和次梁不论其支座是墙还是梁，均视为铰支座，由此引起的误差可在计算时所取的（）加以调整。
A.
跨度
B.
荷载
C.
剪力值
D.
弯矩值
【单选题】It’s about time (that) he —— to look after himself.
A.
learning
B.
learn
C.
should learned
D.
learned
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