航海英語船舶操縱基本知識單項(xiàng)選擇題每日一練(2019.01.21)

來源：考試資料網(wǎng)

1 Apparent wind speed blowing across a vessel under tow can be measured by a(n)（）.

2 The catenary（）.

3 The effect known as bank cushion acts in which of the following ways on a single-screw vessel proceeding along a narrow channel? （）

4 In ballasting to survival draft，while in transit，due to extreme wind and wave loads，thrusters or propulsion，if available，should be used to（）.

5 A twin-screw vessel is easier to maneuver than a single-screw vessel because the twin-screw vessel（）.