题目内容

But in terms of daily usage, the crows hope that you will think of them first when you're looking for those quality-of-life intangibles usually associated with birds.In this sentence, the underlined word means.

A. invisible assets
B. invaluable assets
C. things thathave value but do not exist physically

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S7-200 SMART有()个高速计数器HSC0~HSC5。

S7-200 SMART高速计数器有()种不同的工作模式。

高速计数器一般与()一起使用。

HSC0、HSC2、 HSC4 和 HSC5 支持全部8 种计数模式,HSC1 和 HSC3 因为只有一个时钟脉冲输入,只支持模式 ()。

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