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【单选题】
卫星轨道是椭圆时,以下说法正确的是A.
半P=a
B.
偏心率e大于
C.
近地点的径矢小于远地点的径矢
D.
焦距c=0
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举一反三
【单选题】The two major forms of workforce diversity are ________ and ________.
A.
surface-level diversity; deep-level diversity
B.
surface-level diversity; lateral-level diversity
C.
organizational-level diversity; individual-level diversity
D.
lateral-level diversity; deep-level diversity
【单选题】The diversity of roles played by microtubules largely results from the diversity of tubulin isoforms that make up the filaments. What accounts for the diversity of roles played by microfilaments?
A.
actin isoforms
B.
variations in the manner in which G actin aggregates into F actin
C.
differences in the myosins that interact with actin
D.
the variety of actin-binding proteins
【单选题】The best title for this passage might be______.
A.
Diversity and Unity
B.
Diversity versus Unity
C.
Psychology in Diversity
D.
Professional Diversities
【单选题】'It' in Paragraph Three refers to
A.
diversity.
B.
the buzz.
C.
how to handle diversity.
D.
the formation of diversity.
【单选题】以下P7板说法不正确的是（）。
A.
P7板上任意一盏信号灯亮均导致两盏主警告灯亮
B.
P7板上两盏主警告灯均为红色
C.
P7板上两盏主警告灯均可按压复位
D.
按压P7板上任意一盏主警告灯均会导致所有的信号灯灭
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