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【单选题】
复合按钮在按下触头动作情况是A.
触头先接通，常闭触头后断开
B.
常闭触头先断开，触头后接通
C.
触头接通与常闭触头断开同时进行
D.
无法判断
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举一反三
【单选题】---What sales tools should we use at the trade shows.?---________
A.
The staff needsmobile phones to talk at the trade show.
B.
We need to have our product catalogues and business cards prepared.
C.
The staff should be very cautious at the trade shows.
【多选题】Trade shows are classified as“_____” , “________”or“_____”.
A.
Professional
B.
Public
C.
Trade Only
D.
Hybrid
【简答题】What kinds of trade shows are there in the real world? There are ______ and Trade Only.
【简答题】Why do cities often promote trade shows? Cities often promote trade shows as a means of ______ .
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