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单选题
During sea trial, the main engine well be kept run at load（）
A
100%
B
110%
C
85%
D
different
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cylinder headsB
exhaust valvesC
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a brief trial with turning gearB
a brief trial on powerC
a long trial by steering gearD
one minutes trial with windlass
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单选题While sailing under normal weather and sea condition, the basic parameter which is used to restrict the fuel injection of main engine is （）A
power of main engineB
turbine rotation speedC
speed of main engineD
exhaust temperature
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