网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
单选题
By convention,the north seeking ends of a compass’ magnets are colored().
A
Black
B
Blue
C
Red
D
White
参考答案
参考解析
解析:
暂无解析
更多 “单选题By convention,the north seeking ends of a compass’ magnets are colored().A BlackB BlueC RedD White” 相关考题
考题
单选题一般船舶在靠泊操纵时,有关控制抵泊余速的操作哪一种说法正确()?Ⅰ淌航至泊位前端是控制余速的关键时刻Ⅱ能保证舵效的情况下,速度尽量慢Ⅲ船首抵泊位旗时的余速以不超过2节为宜Ⅳ空载而横风较大时,余速应降低A
Ⅰ~ⅣB
Ⅰ~ⅢC
Ⅱ~ⅣD
Ⅱ、Ⅲ
考题
单选题Burning diesel oil should be treated as which class of fire?()A
Class AB
Class BC
Class CD
Class D
考题
单选题The tool used in precision work to smooth or enlarge a slightly undersized hole, is called()A
round outB
round fileC
reamerD
hole driller
考题
单选题Scale accumulation on evaporator heat exchange surfaces ().A
increases brine densityB
increases distillate salinityC
reduces metal corrosionD
reduces heat transfer
考题
单选题主机主轴承磨损后,()性能参数发生变化。Ⅰ.臂距差;Ⅱ.桥规值;Ⅲ.轴承间隙;Ⅳ.曲轴轴线状态;Ⅴ.主轴颈下沉量。A
Ⅰ+Ⅱ+Ⅲ+ⅣB
Ⅰ+Ⅱ+ⅣC
Ⅰ+Ⅱ+Ⅲ+Ⅳ+ⅤD
Ⅰ+Ⅱ+Ⅲ
考题
单选题随着DGPS基准站与GPS用户之间距离的增大,观测卫星的角度发生变化,则()。A
星历表误差与电离层折射误差逐渐变小,公共性变差,差分效果也逐渐变差B
星历表误差与电离层折射误差逐渐变大,公共性变差,差分效果也逐渐变差C
星历表误差与电离层折射误差逐渐变小,公共性变好,差分效果也逐渐变好D
星历表误差与电离层折射误差逐渐变大,公共性变好,差分效果也逐渐变好
考题
单选题Thermocouple pyrometers are used on large, main propulsion diesel engines to indicate the temperature of the()A
cooling water leaving each cylinderB
fuel oil entering the injectorC
exhaust gases at various locationsD
lube oil at the bearing supplies
考题
单选题船舶前进中,正横后来风:()A
风动力中心在重心之前,水动力中心在重心之后B
风动力中心在重心之前,水动力中心在重心之前C
风动力中心在重心之后,水动力中心在重心之后D
风动力中心在重心之后,水动力中心在重心之前
热门标签
最新试卷