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【多选题】
塑料门窗安装应采用预留洞口的方法施工，当门窗与墙体固定时，固定上框，后固定边框，固定方法包括( )。A.
混凝土墙洞采用钻孔后用自攻螺钉拧入
B.
砖墙洞口采用塑料膨胀螺钉或木螺钉固定，并固定在胶粘圆木楔上
C.
加气混凝土洞口，采用水泥钉将固定片固定在胶粘圆木上
D.
设有预埋铁件的洞口应采用焊接的方法固定
E.
设有防腐木砖的墙面，采用木螺钉把固定片固定在防腐木砖上
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举一反三
【单选题】How does a framework-based approach to a code of ethics differ from a rules-based approach?
A.
A rules-based approach is based aound general principles.
B.
A framework-based approach prescribes general guidelines on how to handle certain situations.
C.
A rule-based approach is designed to cope with constantly evolving circumstances.
D.
A framework-based approach requires members to learn specific rules covering every conceivalbe situations.
【单选题】What does the author most probably think of the content-based learning?
A.
He doubts it.
B.
He supports it.
C.
He thinks it funny.
D.
He finds it impractical.
【单选题】What does the expression 'fall flat' in the last paragraph probably mean based on the context?
A.
serve their function
B.
fail to take effect
C.
meet the expected demands
D.
dropped down and broken into pieces
【单选题】Based on the figure, does S depend on the frequency of a sound wave of a given intensity?
A.
Yes, because as frequency increases, S increases.
B.
Yes, because as frequency increases, S remains constant.
C.
No, because as frequency increases, S increases.
D.
No, because as frequency increases, S remains
【单选题】A scientist does not accept statements which are not based on the most complete evidence available. Instead, he always checks, studies and makes experiments carefully and objectively to ______ them.
A.
testify
B.
verify
C.
affirm
D.
assert
【单选题】Questions are based on the following passage. 'Innovative' does not necessarily mean radical or expensive， nor do the best ideas comefrom the top. A woman on the shop floor at Ford suggested putting s...
A.
everything that is beneficial to people can be said to be innovative
B.
even the common people can put forward an innovative suggestion
C.
people are easy to accept new things that are helpful to them
D.
the ideas from the top sometimes are not as good as those from ordinary people
【单选题】In a gold-based alloy，copper does which of the following( )
A.
prevents corrosion
B.
increases malleability
C.
increases hardness
D.
A and B
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