【简答题】在极低温状态下,有些金属电阻突然变为零的现象叫 _________________ 现象。
【简答题】The first bicycles were made of wood. After that, manufacturers used steel tubes. But the steel ones cost too much. The people in poorer countries want to have cheaper ones. Izhar Gafni had an idea to...
【判断题】链传动的平均传动比和瞬时传动比都为常数。( )
【单选题】Questions 1 to 4 are based on the conversation you have just heard.
A.
Manufacturers don’t like it.
B.
Medical ads are not allowed to do it.
C.
They can’t afford the cost.
D.
They can’t make promises.
【单选题】The problem with the American car manufacturers is ______________.
A.
their products are of lower quality
B.
their products are not liked by the Japanese
C.
they don’t send salespeople to door-to-door selling
D.
their products are too expensive
【单选题】不宜直接添加入面包面团中的乳品是( )。
【单选题】西安市居民王某应聘在深圳某公司短期工作,他欲报名参加当地旅行社组织的出境旅游,他应当向()的市县公安机关申请办理出境证件。