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—Can I come this evening or tomorrow morning?—Oh, _____is OK. I'm free today and tomorrow.
I was ______the drawing and bought it _____300 yuan.
My chest _______ when I make a deep breath, doctor.
I can't understand this passage _______there are no new words in it.
—I'm afraid his radio is too noisy. Will you please _____ him to turn it down?—Sure.
---Do you know Jim quarreled with his brother this morning? --I don’t know, ______.
ΔI 总为由于质量改善所得到的经营总收益,其计算公式为( )。
以下I/O存储区中只能按字访问的是( )
关于P I 控制器作用,下列观点正确的有( )
OMRON的CJ系列PLC系统使用前必须创建I/O表。( )
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