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【简答题】
例 2-6 我国对人体安全电压是这样规定的,以通过人体的电流不能超过 30mA为限,安全电压为30~36V,估算人体电阻是 Ω~ Ω 。
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举一反三
【多选题】信用证中对装运期规定的表示方法有多种,以下符合《跟单信用证统一惯例》的规定的有()。
A.
immediately(立即装运)
B.
on or about(在或大概在)
C.
at the beginning of the month(月初)
D.
between(在……之间)
【单选题】His father is a _____, he _____ well. [ ]
A.
cooker; cooks
B.
cook; cooking
C.
cook; cooks
D.
cook; is cooking
【单选题】Ann likes _____, but she can't _____ well. [ ]
A.
cook; cook
B.
to cook; cooks
C.
cooks; cooking
D.
cooking; cook
【单选题】He is a ______ and he can cook ______ food. [ ]
A.
cook, French
B.
cook, France
C.
cooker, French
D.
cooker, France
【简答题】People cook there.
【多选题】信用证中对装运期规定的表示方法有多种,以下举例中符合《 UCP 600 》规定的有 ( ) 。
A.
immediately （立即装运）
B.
on or about （在或大概在）
C.
between （在……之间）
D.
beginning of a month （月初）
【单选题】选择填空。 She likes ______, so she wants to be a ______. [ ]
A.
cooking, cook
B.
cook, cooking
C.
cook, cook
【单选题】He would rather________for himself than_______for a meal.
A.
cook;going out
B.
to cook;go out
C.
cook;go out
D.
cooking;going out
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