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典型调查中的典型单位是( )加以选取的,抽样调查中单位的选择是按照( ) 原则加以选取。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
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【单选题】I knew he was the man the police were looking for______I saw him in the supermarket.
A.
quickly
B.
promptly
C.
swiftly
D.
instantly
【单选题】下列选项中不属于气压传动装置的是( )。
A.
锻压机械的空气锤
B.
风镐
C.
气流无梭纺纱机
D.
液压泵
【简答题】The police knew nothing about the case ________ your father phone them. A) after B) since C) as D) until
【单选题】叶轴作一次羽状分枝,每一分枝为羽状复叶的是( )
A.
二回羽状复叶
B.
三回羽状复叶
C.
奇数羽状复叶
D.
偶数羽状复叶
【单选题】The police knew nothing about the case ______ your father phone them.
A.
after
B.
since
C.
as
D.
until
【单选题】It was not until he came back _____ he knew the police were looking for him.
A.
which
B.
since
C.
that
D.
before
【单选题】In the second paragraph, we can infer that ______ .
A.
speech is grammar-driven
B.
theory of language is based on speech
C.
speech sometimes is ungrammatical
D.
grammar lays clown rules for speech
【单选题】发动机燃油消耗率最低的负荷是()。
A.
发动机中等负荷时
B.
发动机小负荷时
C.
发动机大负荷时
D.
发动机怠速时
【简答题】机体对呼吸运动调节的主要途径是
【单选题】The police knew the () of the accident.
A.
cause
B.
reason
C.
result
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