单选题船舶在冰区航行，一般冰量为4/10时，可取8节航速，冰量每增加1/10，航速应减少（）。A0.5节B1节C1.5节D2节
单选题
船舶在冰区航行，一般冰量为4/10时，可取8节航速，冰量每增加1/10，航速应减少（）。
A
0.5节
B
1节
C
1.5节
D
2节
参考解析
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