海锚施放时,一般情况下都应从艇尾施放。()
参考答案:错
--- What a beautiful T—shirt you’re wearing!
How much did you for it?
--- Only fifty yuan.
A.spend B.cost C.pay
溢流阀在斗轮、回转系统中起()的作用。
A.过载
B.保护
C.流量
D.限压保护