【单选题】【消耗次数：1】
塔式起重机的主要部件和安全装置等应进行经常性检查，（ ）不得少于一次，并应有记录。当发现有安全隐患时，应及时进行整改。
①
每天
②
每星期
③
每半个月
④
每月
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相关题目
【多选题】
根据使用说明书的要求，应定期对塔式起重机各工作机构、所有安全装置、（ ）等进行检查，消除隐患。
①
制动器的性能及磨损情况
②
钢丝绳的磨损及绳端固定
③
液压系统、润滑系统
④
螺栓销轴连接处
⑤
轨道基础承载能力
随机题目
【单选题】
We looked at four cars today. The first two were far too expensive, but____ ones were reasonable priced.
①
other
②
others
③
the other
④
another
【单选题】
Nobody is ______, so try not to worry too much about that.
①
full
②
entire
③
perfect
④
complete
【单选题】
Tom: It’s the most delicious fruit I have had a long time.
①
I’m so glad you like it.
②
You are not hungry now.
③
I like eating this fruit, too.
④
You should like it.
【单选题】
I feel very helpless to see the ____telephone bill.
①
including
②
increasing
③
declaring
④
decreasing
【单选题】
Alotofthesmalltownsintheareaaredefinitelyworth ____.
①
to visit
②
to be visit
③
be visited
④
visiting
【单选题】
You can not see the doctor ____ you have made an appointment with him.?
①
except ?
②
even ?
③
unless ?
④
however?
【单选题】
She was wondering whether he has been writing anything new ____
①
late
②
later
③
latter
④
lately
【单选题】
-Let me introduce myself, I’m Albert. - ____.
①
Pleased to meet you.
②
I’m very pleased.
③
Its my pleasure.
④
What a pleasure.
【单选题】
I think we’d better ____ , otherwise we will be late for class.
①
to hurry up
②
hurrying up
③
hurried up
④
hurry up
【单选题】
The shy girl felt ____ and uncomfortable when she could not answer her teacher’s questions.
①
awkward
②
amazed
③
curious
④
amused