单项选择题

一般要求机车柴油机气缸套应具有( )要求。
A、足够的热强度
B、一定的刚度
C、耐磨、耐腐蚀
D、以上都是

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When plans are developed that can actually be used by organizational members, the traditional top-down approach to planning most likely to be effective.
正确
错误

答案：正确

单项选择题

Which of the following statements about process losses are correct? (i) Units of normal loss should be valued at full cost per unit (ii) Units of abnormal loss should be valued at their scrap value
A、(i) only
B、(ii) only
C、Both of them
D、Neither of them