单项选择题

My task boils down to industrial ______ and trouble shooting.

A．contact
B．intimacy
C．liaison
D．involvement
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单项选择题
This incident ______ me in my belief that loving-mother force alone is incomplete, with out father's discipline.
A．committed
B．conducted
C．confirmed
D．compelled
单项选择题
Any expenses you may ______ will be chargeable to the company.
A．incur
B．occur
C．catch
D．spend
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