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【多选题】
社会习俗包括()消费习俗。A.
当面询问
B.
电话咨询
C.
观察人的行为
D.
进行实验
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反馈参考答案：
举一反三
【单选题】The purpose of a temperature sensing device installed in the stack of a small automatically fired auxiliary steam boiler is to secure the oil burner .
A.
in the event of a flame failure
B.
in the event of a stack fire
C.
when the water level reach the crown sheet
D.
when the feed pump discharge pressure drops to a preset minimum
【单选题】Parasite power is very useful for applications ______ require remote temperature sensing or that are very space constrained.
A.
what
B.
while
C.
that
【简答题】根据2010年解释通则,卖方项下承担最小义务的术语为( ),卖方承担义务最大的术语为( ) 填字母即可
【简答题】在茶艺服务接待德国客人时,不要向其推荐( )茶点。
【单选题】temperature sensing protective devices operate a control circuit which can ( )the current when the device reaches a predetermined temperature.
A.
switch off
B.
switch on
C.
operate
【单选题】Temperature sensing protective devices operate a control circuit which can ______the current when the device reaches a predetermined temperature.
A.
switch off
B.
switch on
C.
operate
D.
无
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