单项选择题

国际法制计量局是国际法制计量组织的（）

A.执行机构
B.常设机构
C.联络机构
D.工作机构

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单项选择题
A．In the morning.B．In the afternoon.C．In the evening.D．The whole day.
A.In
B.
B．In
C.
C．In
D.
D．The
E.
单项选择题
A．Everybody is expected to buy gifts for their friends.B．Nobody gets off work or school on April Fool's Day.C．People are invited to dinner on April Fool's Day.D．Each country celebrates April Fool's Day in the same way.
A.Everybody
B.
B．Nobody
C.
C．People
D.
D．Each
E.
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