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【单选题】
根据人们的主观分析判断确定未来的估计值的是A.
定量分析法
B.
因果预测法
C.
定性分析法
D.
回归分析法
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反馈参考答案：
举一反三
【多选题】下列关于电梯导轨的安装描述正确的有( )。【多选】
A.
与支架之间采用焊接固定
B.
轿厢侧导轨工作面与安装基准线每5m垂直度误差不大于0.6mm
C.
轿厢侧导轨顶面间距误差为0-2mm
D.
每根导轨至少要有两个固定支架
E.
相邻固定支架之间的间距不应大于3m
【多选题】04-85下列关于电梯导轨的安装描述正确的有( )。 [多选题]
A.
与支架之间采用焊接固定
B.
轿厢侧导轨工作面与安装基准线每5米垂直度偏差不大于0.6㎜
C.
轿厢侧导轨顶面间距偏差0-+2㎜
D.
每根导轨至少要有两个固定支架
E.
相邻固定支架之间的间距不得大于3m
【单选题】Jim has been looking for his dictionary for almost an hour, and Tracy forgot to tell him that David ________it ________2 hours ago. [ ]
A.
took; away
B.
took; in
C.
took; over
D.
took; on
【单选题】Yes. I have, and, of course, they have just what Susan expected:huge blast furnaces , converters, steel ingots , billet mills plate and section mills ,miles of railway track.
A.
转炉
B.
高炉
C.
钢锭
D.
中厚板轧机
【简答题】Jim:____________ Tracy: I bought this dress for my daughter last week, but____________, I’d like to change it for a larger one. Jim: Oh, I see. Well, which one would you like to take? Tracy: _________...
【多选题】从方框中所给的A、B、C、D、E五个选项中选出可以填入空白处的最佳选项,完成对话。 Jim : 11 Tracy: I bought this dress for my daughterlast week, but 12 , I’d like to change it for a largerone. Jim: Oh, I see. Well, which one would you like ...
A.
Size L, the red one.
B.
I’m sorry for the trouble.
C.
I left it at home.
D.
It’s too small for her.
E.
What can I do for you, madam?
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