【多选题】【消耗次数：1】
作业按其层次分类，可以分为（ ）。
①
工时动因作业
②
批次作业
③
产品作业
④
辅助作业
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相关题目
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动火作业分为特殊动火作业、一级动火作业、二级动火作业，其中，特殊动火作业的安全作业证审批部门应为（ ）。
①
主管厂长或总工程师
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安全管理部门
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弹性
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个性化
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探究
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实践
随机题目
【单选题】
22. When a fire ______ at the National Exhibition in London, at least ten priceless paintings were completely destroyed.
①
broke off
②
broke out
③
broke down
④
broke up
【单选题】
23. Realizing that he hadnt enough money and ______ to borrow from his father, he decided to sell his watch.
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not wanted
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not to want
③
not wanting
④
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【单选题】
20.The girl’s voice was so low that we could ________ hear her.
①
seldom
②
almost
③
only
④
hardly
【单选题】
7.When we go abroad we are always being ______ around like a group of mentally disabled people.
①
guided
②
.ushered
③
introduced
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displayed
【单选题】
9. All correspondence ______ to the editor should be sent by airmail.
①
addressed
②
sent
③
signaled
④
went
【单选题】
11.Since family ______children’s character, he encouraged parents to teach children reading.
①
formed
②
shaped
③
built
④
made
【单选题】
17. It was the headmaster _____ gave us the leave to go to the concert.
①
who
②
whom
③
that
④
which
【单选题】
15.It was on the day my first son was born _____ I put them in the soil.
①
when
②
who
③
that
④
where
【单选题】
19.Our school library is ________ closed for repairs.
①
shortly
②
quickly
③
temporarily
④
rapidly