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【单选题】
时间继电器通常用于电动机控制线路的______。A.
转速控制原则
B.
电流控制原则
C.
顺序控制原则
D.
时间控制原则
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【单选题】A: Blue Sea. This is Port Control. What’s your present course and speed? Over B: Port Control. This is Blue Sea. My present course and speed is 130o, 12knots. Over Q: What is Blue Sea’s present c...
A.
113º/ 12 knots
B.
130º/ 12 knots
C.
130º/ 20 knots
D.
131º/ 20 knots
【简答题】根据流场中流动参数随时间的改变情况可将流动分为 和 。
【单选题】33 A:Blue Sea. This is Port Control. What's your present course and sPeed?B:Port Control. This is Blue Sea. My present course and speed is 130 degree,12knots. Over.Q:What is Blue Sea's present course...
A.
112 degree /12 knots
B.
130 degree /12 knots
C.
130 degree /20 knots
D.
131 degree /20 knots .
【单选题】A: Yellow River. This is Port Radio. What is your present course and speed? Over.B: Port Radio. This is Yellow River. My present course and speed is 115°, 15 knots. Over.Q: What is the course and s...
A.
15°, 25 knots
B.
15°, 20 knots
C.
05°, 15 knots
D.
15°, 15 knots
【单选题】Your present course is too close to the vessel you are overtaking
A.
You are advised to change course to the ingoing vessel
B.
You are advised to change course to the outgoing vessel
C.
You are advised to change course to clear the vessel being overtaken
D.
You are advised to change course to clear the south limit of the fairway
【简答题】S1:Vessel Blue Whale.What is your present course and speed? Over.S2:Helicopter,this is Blue Whale.My present course and speed is 190 degrees,16 knots.Over.Q:What does helicopter want to know?A. vessel...
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