【判断题】【消耗次数：1】
当塔式起重机顶部高度大于50m且高于周围建筑物时，应安装障碍指示灯
①
正确
②
错误
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相关题目
【单选题】
下列满足塔式起重机正常使用条件的是（）
①
A工作环境温度42℃
②
B安装架设时塔式起重机顶部3s时距平均瞬时风速15m/s
③
C工作状态时塔式起重机顶部3s时距平均瞬时风速18m/s
④
D海拔高度1200m
随机题目
【判断题】
答题说明：句子没有语法错误请选择“正确”，有语法错误请选择“错误”Only by working hard we can succeed in this difficult experiment.
①
正确
②
错误
【判断题】
答题说明：句子没有语法错误请选择“正确”，有语法错误请选择“错误”Hardly he had entered the room when he was asked to leave the room at once.
①
正确
②
错误
【多选题】
He_____________ to be reading when his mother came in.
①
drew a conclusion
②
nothing but
③
made himself seem
④
pretended
【多选题】
Computer can store_____________ amounts of information.
①
huge
②
vast
③
large
④
small
【多选题】
He arrived too late and_____________ the train.
①
failed to catch
②
fail to catch
③
missed
④
miss
【多选题】
_____________ , you are perfect in mind and body.
①
In time
②
In a word
③
In short
④
In sum
【多选题】
_____________ the bad weather, they did experiments on ways of storing solar energy.
①
Though
②
Although
③
Despite
④
In spite of
【多选题】
You speak ____________ you had really been there.
①
as soon as
②
as many as
③
as if
④
as though