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
地球上某点φ＝40°N，λ=120°E，则它与地心的对称点是（）。
A
φ＝40°S，λ＝120°W
B
φ＝40°S，λ＝120°E
C
φ＝40°N，λ＝060°W
D
φ＝40°S，λ＝060°W
参考答案
参考解析
解析：
暂无解析
更多 “单选题地球上某点φ＝40°N，λ=120°E，则它与地心的对称点是（）。A φ＝40°S，λ＝120°WB φ＝40°S，λ＝120°EC φ＝40°N，λ＝060°WD φ＝40°S，λ＝060°W” 相关考题
考题
单选题When visibility is 10 nautical miles, we say that visibility is（）.A
very goodB
goodC
poorD
moderate
考题
单选题Friction developing between the moving parts of a governor, governor linkage and control valve will cause the governor to （）.A
react with insufficient speed droopB
fail to react to small speed changesC
have excessive sensitivity to small speed changesD
remain in the neutral position
考题
单选题The ship security officer shall have knowledge and have received training, taking into account the guidance given in Part B of （）A
the ISM CodeB
the ISPS CodeC
the IBC CodeD
the IGC Code
考题
单选题A governor automatically controls engine speed by regulating （）.A
fuel supplyB
firing orderC
engine loadD
oil level
考题
单选题下列有关ISM规则说法，正确的是（）。 Ⅰ、ISM规则是自愿执行式规则 Ⅱ、ISM规则必须强制执行 Ⅲ、ISM规则的侧重点在于加强安全管理机制，提高人员素质 Ⅳ、ISM规则也侧重于船舶技术方面A
Ⅰ+ⅣB
Ⅱ+ⅣC
Ⅱ+ⅢD
Ⅰ+Ⅱ
考题
单选题Anchor shackles should have a breaking strength that is（）.A
equal to the chains they are connectingB
25% more than the chains they are connectingC
50% more than the chains they are connectingD
100% more than the chains they are connecting
考题
单选题柴油机运转中，根据（）现象可迅速判断柴油机燃烧室零件是否产生穿透性裂纹。Ⅰ.冷却水压力表指针波动；Ⅱ.冲车时有水珠喷出；Ⅲ.缸壁面有锈痕；Ⅳ.膨胀水柜水位变化；Ⅴ.曲轴箱油位升高。A
Ⅰ＋Ⅳ＋ⅤB
Ⅰ＋Ⅱ＋ⅤC
Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ＋ⅤD
Ⅱ＋Ⅲ＋Ⅳ
考题
单选题The air-conditioner is running in the winter and to be stopped, we should（）A
close Fan and Humidifier at the same timeB
firstly close Fan and then close humidifier immediatelyC
firstly close humidifier and then close Fan immediatelyD
firstly close humidifier and then close Fan after 30 seconds
考题
单选题某曲轴轴颈测量结果为：DIx=290．26，D1y=290．50，D2x=290．16，D2y=290．30mm，则x纵截面的圆柱度误差为（）。A
0.05mmB
0.10mmC
0.12mmD
0.20mm
考题
单选题The sealing rings are in four parts and pressed together around the piston rods by means of （）.A
nutsB
boltsC
coil springsD
stuffing boxes
考题
单选题The ship（）on a low rock was broken in two by the waves.A
that had been drivenB
had been drivenC
have been drivenD
which to have been driven
考题
单选题关于锅炉燃烧器管理的下列说法中正确的是（）。A
炉膛底部积油说明喷油量过多B
装备多个燃烧器的锅炉若暂时停用个别燃烧器，应关严风门防止漏风C
不能用钢丝刷清除雾化片上的结焦D
雾化片价格高，一般不存备件
考题
单选题In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.A
Globe valveB
Butterfly valveC
Gate valveD
Packless valve
考题
单选题在能见度不良的水域中，下列说法哪个正确：（） ①一船用机器推进，如果正在从事使其操纵能力受到限制的作业，则不受“将机器做好随时操纵的准备” ②一船用机器推进，如果正在捕鱼作业，则不受“将机器做好随时操纵的准备” ③任何用机器推进的船舶均应将机器做好随时操纵的准备。A
①②B
①③C
②③D
③
热门标签
最新试卷