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【判断题】
轮廓算术平均偏差是指在取样长度内轮廓偏距绝对值的算术平均值，也就是在取样长度内被测表面轮廓上各点到轮廓中线距离的绝对值的算术平均值。A.
正确
B.
错误
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举一反三
【单选题】The braking system on a vehicle has the functions of:
A.
reduce the speed of vehicle
B.
hold the vehicle stationary
C.
all of above
【简答题】英译中 Such large, impersonal manipulation of capital and industry greatly increased the numbers and importance of shareholders as a class, an element in national life representing irresponsible wealth d...
【单选题】Is increased capital spending the only way for an economy to expand its production possibilities curve?
A.
No, an economy can also expand by invention and innovation.
B.
No, an economy can also grow by reallocating more resources toward the production of consumption goods.
C.
Yes, more capital investment is the only way to expand production possibilities.
D.
Yes, although increased production of capital clearly increases the opportunity cost.
【简答题】Yemeni 5.________ say they have increased protection of foreign interests in the capital.
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