This is the best place to land
You are seen - assistance will be given as soon as possible
Tail block is made fast
Slack away
第1题：
An analog signal's characteristic quantity representing data may 66). at any instant, any value within a continuous(67). For example, an analog signal may follow continuously the values of another physical quantity representing data.A discrete signal is composed of(68)elements in time, each element having one or more characteristic quantities which can represent data. Examples of characteristic quantities are amplitude, waveform,(69), and position in time. A digital signal is a special case of discrete signals, in which data are represented by a(70)number of well-defined discrete values that one of its characteristic quantities may take in time.
A．acquire
B．collect
C．assume
D．fetch
第2题：
A signal indicating Greenwich mean time would be preceded with ______.
A.a code hoist to indicate Greenwich mean time to follow
B.the letter G
C.the letters GT
D.the letter Z
第3题：
One of the signals, other than a distress signal, that can be used by a rescue boat to attract attention is a/an ______.
A.red star shell
B.searchlight
C.burning barrel
D.orange smoke signal
第4题：
If you are on the beach and are signaling to a small boat in distress that your present location is dangerous and they should land to the left，you would ______．
A.fire a green star to the left
B.send the letter K by light and point to the left
C.place an orange signal to your left as you signal with a white light
D.send the code signal S followed by L
第5题：
You are preparing to take another vessel in tow．Which signal indicates，Hawser is made fast ______．
A.Firing of a green star signal
B.Firing of a red star signal
C.An orange smoke signal
D.Three white star rockets at 1-minute intervals
第6题：
A life float on a fishing vessel must be equipped with ______.
A.a painter
B.red smoke flares
C.a jackknife
D.a signal mirror
第7题：
A vessel may use any sound or light signals to attract the attention of another vessel as long as ______.
A.white lights are not used
B.red and green lights are not used
C.the signal cannot be mistaken for a signal authorized by the Rules
D.the vessel signals such intentions over the radiotelephone
第8题：
If some of the cylinders are not firing, the ones affected may be determined by watching
A.the exhaust temperature
B.the exhaust pressure
C.the governor
D.the fuel flow meter
第9题：
The Coordinator Surface Search（CSS）in a SAR situation should display by night ______．
A.Deck lights forward and aft
B.A white light over two red lights
C.A red light，white light，and blue light in a vertical line
D.A distinctive signal promulgated by the CSS
第10题：