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【单选题】
坐标方位角的取值范围是A.
0°～360°
B.
0°～180°
C.
-90°～90°
D.
任意值
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举一反三
【单选题】How long do you think it will be _______ scientists succeed in providing a cure for cancer?
A.
when
B.
after
C.
since
D.
before
【单选题】以下关于锉削方法叙述不正确的是()。
A.
锉刀断面形状的选择要和工件加工部位形状相适应
B.
锉平平直的平面，必须使锉刀保持直线的锉削运动
C.
为了提高效率，前推和返回都施加压力进行锉削
D.
锉削的表面不能用手去摸
【简答题】What is the secret ingredient of tough people that enables them to succeed? Why do they survive the tough times when others are overcome by them? Why do they win when others lose? Why do they soar whe...
【单选题】You will (not be able to) succeed (except) you work (harder) than you (do) now.
A.
not be able to
B.
except
C.
harder
D.
do
【简答题】'When people succeed, it is because of hard work. Luck has nothing to do with success.' Do you agree or disagree with the above quotation? Write an essay of about 400 words on the following topic: Har...
【单选题】__________ the producers of the “ red ” programs do a good job , Chongqing Satellite TV will succeed .
A.
As far as
B.
In case
C.
Even if
D.
So long as
【单选题】锉平直的平面,必须使锉刀保持( ),在推进过程中要使锉刀不出现上下摆动,就必须使锉刀在工件任意位置时前后两端所承受的力矩保持平衡。
A.
直线运动
B.
曲线运动
C.
锋利
D.
较快的锉削速度
【简答题】锉削时两手的用力和锉削速度: 要锉出平直平面,必须使锉刀保持直线运动。锉削时右手的压力要随锉刀推动而 ,左手的压力要随锉刀推动而逐渐减小,回程 ,以减小锉齿的磨损。 速度:一般应在 次/分左右,推出时稍慢,回程稍快,动作自然协调。
【单选题】I really do not know whether we can succeed, so do not expect ______.
A.
too much of us
B.
us too much
C.
of us too much
D.
us of too much
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