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【多选题】
混凝土工程安全注意事项中,以下哪些做法是正确的:()。A.
搬运水泥要从上至下 , 呈梯形搬取 , 使用人员需戴防护镜、手套、口罩等防护 用品。
B.
临时堆放备用水泥,不得堆叠过高 , 如需堆放在平台上 , 应不超过平台的允许承 载能力。
C.
手推车子向料斗倒料 , 应有挡车措施 , 不得用力过猛和撒把。禁止车子堆料过多 和推到挑沿、阳台上直接倒料。
D.
用龙门架、井架运输时 , 小车把不得伸出笼外 , 车轮前后要挡牢 , 稳起稳落。
E.
浇灌框架、梁、柱混凝土 , 应设置操作平台 , 不得直接站在模板或支撑上操作 , 浇灌深基础时 , 应检查边坡士质安全 , 如有异常 , 应报告施工负责人及时处理、加固。
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【简答题】分析图F.4的输入输出关系。
【单选题】Life insurance, before available only to young, healthy persons, can now be obtained for old people, and even for pets.
A.
before young, healthy persons available only,
B.
available only to young, healthy persons before,
C.
available only to persons young, but more healthy,
D.
before young and healthy persons only available to,
【单选题】It is not how much we do but how much love we put into what we do ________ benefits our work most. [ ]
A.
who
B.
which
C.
that
D.
what
【单选题】These young people are now making an active ______ to beautify our city.
A.
part
B.
effort
C.
decision
D.
plan
【单选题】Life insurance, before available only to young, healthy persons, can now be obtained for quite a large proportion of the elderly population, and, sorry, even for pet animals.
A.
before young, healthy persons available only,
B.
available only to young, healthy persons before,
C.
available only to persons young, but more healthy,
D.
before young and healthy persons only available to,
【单选题】It is not how much we do but how much love we put into what we do _____ benefits our work most.
A.
when
B.
that
C.
what
D.
how
【单选题】Life insurance, before available only to young, healthy persons, can now be obtained from old people, and even for pets.
A.
before young, healthy persons available only,
B.
available only to young, healthy persons before,
C.
available only to persons young, but more healthy,
D.
before young and healthy persons only available to,
【简答题】一位全加器FA和2—4译码器及与非门组成的逻辑电路如图3.2.85所示，分析出该电路的输出与输入的关系。要求写出函数F(A，B，C，D)的逻辑表达式(不用化简)，最终结果表示为最大项之积的形式。
【单选题】Only now are young people ____the importances of having knowledge.
A.
aware of
B.
be aware of
C.
aware
D.
have become aware of
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