已知:3x=2,求3x+2的值.______
∵3x=2,
∴3x+2=3x?32
=2×9
=18.
--What do you think of your new secretary?
--I am delighted ______her.
A.to
B.with
C.of
D.at
接地线的安全使用有哪些规定?