Not only the switches but also the old wiring ______ changed.
A. have
B. are
C. have been
D. has been
A.通过IPC手册查找
B.通过AWM手册中的设备清单查找
C.通过Advanced Tool中的Dynamic wiring查询
Electrical wiring on all "T-Boats" must be ______.
A.concealed to prevent mechanical damage
B.concealed so the boat can be maintained more easily
C.protected from the weather
D.in an accessible place behind the ceiling