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【简答题】速度继电器 的文字符号()
【单选题】It is well known that the whole power distribution of the ship’s electrical services mainly depend on the______.
A.
sub-boards
B.
main switchboards
C.
emergency switchboards
D.
distribution boards
【单选题】In the office an electrical engineer is looking through the instructions to know ________ the heat system works before the repair work.
A.
whether
B.
why
C.
how
D.
that
【单选题】According to the passage, Capoco's driverless bus______.
A.
will run on electrical power but biofuel
B.
can adapt to different road conditions
C.
needs other outer systems' assistance
D.
must run slowly to make sure its route
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