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【单选题】
无防护设施的人工驳岸,近岸2.0m范围内常水位水深不得大于( )。
A.
0.3m
B.
0.5m
C.
0.7m
D.
1.0m
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have
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【简答题】电离层由围绕地球的处于不同高度的3个导电层组成的,这3个导电层分别 称为( )、( )、( )。
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【单选题】The teacher spoke so fast that it was hard for the students to ______ what he was saying.
A.
take in
B.
take off
C.
take on
D.
take after
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【单选题】The teacher spoke so loudly as __ clearly in the crowded meeting hall.
A.
to hear
B.
to be heard
C.
to listen
D.
to be listened
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【单选题】—What’s the matter? You looked unhappy. —Well, the teacher spoke so quickly and I can __________ understand it.
A.
hardly
B.
nearly
C.
almost
D.
usually
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【单选题】There different classes in our school.
A.
are
B.
have
C.
has
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【多选题】关于一阶线性微分方程【图片】公式解【图片】, 下列说法正确的是
A.
为P(x)的某一个取定的原函数而不是一切原函数
B.
为对应齐次线性方程的通解
C.
为一特解
D.
公式中三个 可以分别取不同的原函数.
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【单选题】The teacher spoke so fast that it was hard for the students to what he was saying.
A.
take in
B.
take out
C.
take up
D.
take over
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【单选题】( )是指对特定标的具有购买能力(支付能力)的欲望。
A.
欲望
B.
需求
C.
需要
D.
愿望
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【单选题】There different classes in our school.
A.
is
B.
has
C.
are
D.
have
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A.
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D.
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【单选题】There different classes in our school.
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A.
为P(x)的某一个取定的原函数而不是一切原函数
B.
为对应齐次线性方程的通解
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A.
take in
B.
take out
C.
take up
D.
take over
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D.
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【单选题】There different classes in our school.
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is
B.
has
C.
are
D.
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