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【单选题】
The angular velocity of the earth is( )A.
20 °/H
B.
15 °/H
C.
25 °/H
D.
24 °/H
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【单选题】Even the mechanic couldn’t figure ______ what had gone wrong with the car.
A.
out
B.
off
C.
of
D.
to
【简答题】Even the mechanic couldn’ t figure ______ what had gone wrong with the car.
【单选题】Even the mechanic couldn’t figure ______ what had gone wrong with the car.
A.
out
B.
at
C.
in
D.
to
【单选题】Even the mechanic couldn’t figure ______ what had gone wrong with the car.
A.
away
B.
off
C.
on
D.
out
【单选题】对上颌第一磨牙牙合面形态的描述哪个是错误的:
A.
牙合面轮廓呈斜方形
B.
近中边缘嵴短于远中边缘嵴
C.
近颊合角及远舌合角是锐角
D.
近中舌尖三角嵴与远中颊尖三角嵴连成斜嵴
E.
近中窝大于远中窝
【单选题】试述相对增益 的物理概念,下面哪个描述是不正确的?
A.
当 ，控制量 与控制量 耦合很严重
B.
衡量一个选定的控制量与其配对的被控量间相互影响大小的尺度
C.
当相对增益 时，表明由被控量 与控制量 配对组成的控制回路与其他回路之间没有耦合关系
D.
当 ，此时就不能用 来控制
【单选题】Even the mechanic couldn't figure ________ what had gone wrong with the car.
A.
about
B.
with
C.
out
D.
down
【简答题】Unsatisfiedwith the payment, he took the job just to got some work experience. A. though was he B, though he wasC. he was though D. was he though
【简答题】设函数 且 存在,则a=____.
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