【单选题】Which spoken emergency signal would you use to call a boat to come assist a man overboard?()
【单选题】How should you signal the crane operator to use the main hoist?().
A.
Use one hand to give any miotion signal , and place the other hand motionless in front of the hand giving the motion signal
B.
Extend arm with the thumb pointing up , and flex the fingers in and out for as long as the load movement is desired
C.
First tap your elbow with one hand , and then proceed to use regular signals
D.
First tap the top of your head with your first , and then proceed to use regular signals
【多选题】在Chromeless Window的弹出的无边框窗口中,下面哪些可以在窗口中显示()
【单选题】The use of the danger signal().
A.
replaces directional signals
B.
makes the other vessel the stand-on vessel
C.
indicates doubt as to another vessels actions
D.
is the same as a MAYDAY signal
【判断题】SONY 9000PL主要 不足之处是其录制时启动速度较慢,需要等待。
【判断题】不能用指令对对程序计数器PC进行读写操作
【简答题】()年12月30日在延安开播的(),标志着人民广播事业的开始