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目前世界上通用的商品条形码有哪些种类?
辅助机油泵的传动型式为()。
下列选项中,哪一项不属于网络环境中,著作权制度所体现出来的特征()。
对淋球菌的描述,下列哪些是错误的()
联系用的手信号中,()的显示方式,昼间为拢起的手信号旗右臂向右方上下摇动,夜间为红色灯光上下摇动。
听觉感受性
抗结核的一线代表药物有( )。
C3S形成的条件是有一定的液相。
涉外经济仲裁中,仲裁庭仲裁员的产生方法应为下列哪项?()
在检测门窗水密性试验时,稳定加压法的淋水量为2L/(m2·min)。
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The maintenance work for sailors includes cleaning , repairing, and ()(涂漆) work ...
The maintenance work for sailors includes ()(清洁), repairing and painting work on...
The sailors should do unmooring work when ()the harbor.
Sailors should do mooring work when () harbour.
The sailors do cleaning and repair work ()the bosun.
The sailors do cleaning and repair work under the supervision of the ().
Cleaning, painting and repairing are known as maintenance work.()
The cooling system() needs least maintenance work for in this kind of system()
The cooling system() needs least maintenance work for in this kind of system()
Which is not the maintenance work for shaft bearings in transmission system?()