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【判断题】
影像富有自身魅力,但有时也会产生危险,会让我们沉浸其中,失去理性的认知。()
A.
正确
B.
错误
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【简答题】J710 1#和3#电压为+B,2#为10V,5#为0V, 故障点: ;
【单选题】18what is the action that a GMDSS radio operator should take when a DSC distress alert is received?
A.
No action is necessary, as the DSC control unit will automatically switch tothe NBDP  follow-on communications frequency.
B.
The operator should immediately set continuous watch on the radiotelephone frequency that  is associated with frequency band on which the distress alert was received.
C.
The operator should immediately set continuous watch on VHF Channel 70.
D.
The operator should immediately set continuous watch on the NBDP frequency Lhat is asso- ciated with frequency band onwhich the distress alert was received.
【单选题】对于纯迟延较大的被控制对象,如下哪一种数字滤波比较合适
A.
平均值滤波法
B.
中位值滤波法
C.
惯性滤波法
D.
加权平均值滤波法
【单选题】During which condition should the operator of a pedestal crane shutdown operations ________.
A.
Bunkering barge alongside
B.
Potable water spill on deck
C.
Crane hydraulic hose bursts
D.
Trim greater than 4 feet
【简答题】J710 1#和3#电压为+B,2#为0V,5#为+BV , 故障点: 。
【单选题】下列各组数中:①-5 2 和(-5) 2 ;②(-3) 3 和-3 3 ;③-(-0.3) 5 和0.3 5 ;④0 100 和0 200 ;⑤(-1) 3 和-(-1) 2 .相等的共有(  )
A.
2组
B.
3组
C.
4组
D.
5组
【单选题】下列各组数中,相等的共有 (1)-5 2 和(-5) 2 (2)-3 2 和(-3) 2 (3)-(-0.3) 5 和0.3 5 (4)0 100 和0 200 (5)(-1) 3 和-(-1) 2 [     ]
A.
2组
B.
3组
C.
4组
D.
5组
【单选题】铁磁谐振过电压一般为( )倍相电压 (
A.
)1~1.5 (
B.
)5 (
C.
)2~3 (
D.
)1~1.2
【简答题】卡诺定理:1、再两个不同温度的热源之间工作的任意热机,以( )的效率为最大。2、卡诺热机的效率只与( )有关,而与( )无关。
【简答题】J710 1#和3#电压为+B,2#和5#为0V,故障点: ;
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