单项选择题
在能见度不良时,关于“安全航速”说法不正确的是（）。①“安全航速”指备车并以前进一的车速行驶;②“安全航速”指能维持舵效的最小速度;③“安全航速”指能在能见距离内把船停住的速度。 A.
① B.
①② C.
②③ D.
①②③
在能见度不良时,关于“安全航速”说法不正确的是（）。①“安全航速”指备车并以前进一的车速行驶;②“安全航速”指能维持舵效的最小速度;③“安全航速”指能在能见距离内把船停住的速度。 A.
① B.
①② C.
②③ D.
①②③
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单项选择题
What should a reporter do when in his research he could not find any formal study that forecasts the future?
What should a reporter do when in his research he could not find any formal study that forecasts the future?
A．He can put in his own opinions on what might happen in the foreseeable tomorrow.
B．He can ask the people to predict the future who are directly involved in the development central to the story.
C．He can talk to his friends and ask about their opinions on what might happen in the future and use their predicting words in the story.
D．None of the above.