正确答案: D
以上三点都是
题目:增压器转子轴承采用外支撑式的优点有( )。
解析:D
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举一反三的答案和解析:
[单选题]If anything abnormal be found on the load change of main engine when the ship is entering in shallow waterway, before taking measures the engineer on duty should _______.
inquire the bridge for the situation initiatively
[单选题]对面积不大的肢体烧伤,可用以下方法减轻疼痛______。
用冷水浸泡
[单选题]使用救生圈时应注意,晚上最好使用:
带自亮灯浮