题目内容

听录音，回答以下问题

A. Family groups.
B. Larger groups.
Classmates groups.
D. Friendship groups.

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A.Watching it without the subtitles.B.Listening without watching it.C.Be

A. Watching it without the subtitles.
B. Listening without watching it.
C. Being familiar with the scenes.
D. Reading after the characters.

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某种燃烧装置采用重油作燃料，重油成分分析结果如下(按质量)：C 88.3%；H 9.5%；S 1.6%；H₂O 0.05%；灰分0.10%。试确定燃烧1kg重油所需要的理论空气量。

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Robert Pianta said he was interested in knowing______.

A. where the whole industry was moving to
B. whether theres some real innovation in there
C. how much money the whole industry would earn
D. whether students could get something new

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转子流量计在安装和使用中应注意什么？

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听录音，回答以下问题

A. Family groups. B. Larger groups. Classmates groups. D. Friendship groups.

A.Watching it without the subtitles.B.Listening without watching it.C.Be

某种燃烧装置采用重油作燃料，重油成分分析结果如下(按质量)：C 88.3%；H 9.5%；S 1.6%；H2O 0.05%；灰分0.10%。试确定燃烧1kg重油所需要的理论空气量。

Robert Pianta said he was interested in knowing______.

转子流量计在安装和使用中应注意什么？

A. Family groups.
B. Larger groups.
Classmates groups.
D. Friendship groups.

某种燃烧装置采用重油作燃料，重油成分分析结果如下(按质量)：C 88.3%；H 9.5%；S 1.6%；H₂O 0.05%；灰分0.10%。试确定燃烧1kg重油所需要的理论空气量。