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单选题
The survivors（）to a floating tree in hopes of rescue.
A
tied
B
seized
C
claimed
D
clung
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单选题You are proceeding to a distress site and expect large numbers of people in the water. Which statement is TRUE?（）A
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单选题How can the SART’s audible tone monitor be used?（）A
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考题
单选题哪个命令可以在交换机启用RSTP？ （）A
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考题
单选题Which spanning-tree command would cause a PortFast-enabled interface to lose its PortFast-operational status and disable BPDU filtering if it receives BPDUs？（）A
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考题
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考题
单选题The mode of control employed by an alarm circuit is a （）A
two position controlB
signal speed floating controlC
proportional speed floating controlD
reset control
考题
单选题Which command enables RSTP on a switch?（）A
spanning-tree mode rapid-pvstB
spanning-tree uplinkfastC
spanning-tree backbonefastD
spanning-tree mode mst
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elm elm elm elmB
tree elm elm elmC
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编译失败
考题
单选题You are proceeding to a distress site．The survivors are in liferafts.What will make your ship more visible to the survivors（）.A
Steering a sinuous courseB
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Turning on all available deck lights at nightD
Dumping debris over the side to make a trail to your vessel
考题
单选题To keep injured survivors warm in the water after abandoning a ship，they should（）.A
be placed in the middle of a small circle formed by the other survivors in the waterB
float on their backs with their arms extended for maximum exposure to the airC
remove their life preservers and hold on to the uninjured survivorsD
sip seawater at intervals of fifteen minutes
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单选题For a floating vessel,the center of the floating is the point in the waterpiane.（）.A
aboat which the vessel lists and trimsB
which coincides with the center of buoyancyC
which, in the absence of external forces, is always vertically aligned with the center of gravityD
which is shown in the hydrostatic tables as VCB
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