A swift current occurring in a narrow passage connecting two large bodies of water which is produced by the continuously changing difference in height of tide at the two ends of the passage is called a(n)（）.
Which of the following is the reason that the metacentric height is a valid measure of only the initial stabilit?（）.
Normal pool elevation is the height in feet of the section of river above a dam. This height is measured from（）.
The ratio of the height of a vessel’s rudder to its width is referred to as the（）.
A swift current occurring in a narrow passage connecting two large bodies of water，which is produced by the continuously changing difference in height of tide at the two ends of the passage，is called a（）.
The generators on your rig have shut down，leaving you without navigation lights. Which emergency signal would you transmit over the VHF radio to alert vessels in the area of your predicament? （）
The daily predictions of the times and heights of high and low water for a selection of Standard Ports are given in（）.
There is a VHF set（）the front of the wheelhouse.
All VHF marine band radios operate in the simplex mode，which means that（）.
If you know that the vessel you are about to call on the VHF radio maintains a radio watch on both the working and the calling frequencies，which frequency should you call on? （）
The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.
Which of the following is the reason that the metacentric height is a valid measure of only the initial stability?（）.
（）is a radio receiver with ablity to sense direction of the incoming radio waves.
A partially full tank causes a virtual rise in the height of the（）.
The average height of the surface of the sea for all stages of the tide over a 19 year period is called（）.
The WWNWS is a coordinated global service for the broadcast by radio of vital information on（）to marine navigation.
How do the height and location of a tug’s towing bitts relate to the danger of tripping?（）
The height of a wave is the vertical distance（）.
The maritime radio system consisting of a series of coast stations transmitting coastal warnings is called（）.
129. The average height of the surface of the sea for all stages of the tide over a 19 year period is called _____.
The height of a 1-year-old boy is about ?
sends a radio signal from the bottom of the ship to the sea-bed，from which it is reflected
What is the most probableresult of the conversation？ [A]Theman got his radio repaired． [B]Theman got a new receipt． [C]Theman got a new radio．
3、一棵有510个结点的完全二叉树的高度为多少？（独根树高度为1) What is the height of a complete binary tree with 510 nodes？ （the height of a tree with only a root is 1)
