顾客之所以关注价格，是因为价格可以提高或降低人们对服务产品的期望。（）
参考答案：对
The island is two kilometers off the coast, and you can’t get there ____ by boat.
A．other than
B．rather than
C．more than
D．less than
船舶Δ=18764t，GM=0.87m，现存在初始横倾角θ0=2.4°，则船舶横倾角为20°时复原力矩减小（）t.m。
A.708
B.643
C.613
D.507
