按舵杆的轴线位置分,在海船上广泛采用的舵是()。
A.半平衡舵
B.不平衡舵
C.流线型舵
D.平衡舵
参考答案:D
液压支架的液压部件发生故障后,不可以在井下进行()。
根据下列句子及所给汉语注释,写出各单词的正确形式,每空只写一词。
小题1:When I was walking in the park, I ______(掉了)my purse.
小题2:The sea water is _______(主要) made up of water and salt.
小题3:It’s said that three _______(猴子) have escaped from the zoo.
小题4:Tiaotiao is one of the ________ (活泼的)girls in the class.
小题5:I’ve got three days’ holiday ______(包括)New Year’s Day.