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【多选题】
制动效能的评价指标包括( )。A.
制动距离
B.
制动减速度
C.
制动效能恒定性
D.
制动时的方向稳定性
E.
不发生跑偏、侧滑
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反馈参考答案：
举一反三
【单选题】Lydia doesn't feel like________abroad. Her parents are old.
A.
study
B.
studying
C.
studied
D.
to study
【单选题】Now parents feel they can’t help______reading stories suitable for their children, so sometimes they can’t help but______ to experts for advice.
A.
find; turn
B.
finding; turning
C.
finding; to turn
D.
to find; to turn
【判断题】按NB/T 47014附录D规定，试件中换热管公称外径d≤ 50mm、公称壁厚b≤2.5mm时，评定合格的焊接工艺适用于焊件中换热管公称外径小于0.85d。
A.
正确
B.
错误
【多选题】按NB/T 47014附录D规定，试件中换热管公称壁厚b≤2.5mm时，评定合格的焊接工艺适用于焊件中换热管公称壁厚不得超过（ ）。
A.
1±0.15b
B.
±1.15b
C.
0.85b-1.15b
D.
1-1.15b
【单选题】My parents didn't feel secure because the Cold War was beginning with the Soviet Union and Eastern Europe.
A.
正确
B.
错误
【单选题】If Jack doesn’t come home as usual, his parents will feel ________ about him
A.
concerned
B.
interested
C.
tired
D.
used
【单选题】How did parents feel in the face of the experts' studies?
A.
They didn't know who to believe.
B.
They felt very much relieved.
C.
They weren't convinced of the results.
D.
They were frightened by the evidence.
【单选题】.Ladex does’t feel like abroad.Her parents are old.
A.
study
B.
studying
C.
studied
D.
to study
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