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【单选题】
为了消除电离层折射误差,GPS卫星导航仪__________。01A.
只接收5°～85°的GPS卫星信号
B.
HDOP由操作者置于10
C.
接收1575.42和1227．60两种频率的GPS信号
D.
不在日出、没前后l小时内使用
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皮皮学刷刷变学霸
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【简答题】Translate the following English into Chinese. Although the cytoskeleton provides some stability to cells, its microtubules and filaments and their associated proteins enable cells to move by creeping ...
【简答题】Basal bodies that organize the microtubules within cilia and flagella are believed to be derived from ( ).
【单选题】Which of the following are characteristics common to all three cytoskeletal systems (microfilaments, microtubules and intermediate filaments)?
A.
are reorganized during mitosis.
B.
have attachment sites for motor proteins.
C.
are highly dynamic.
D.
possess inherent polarity.
【单选题】某年冬天南方发生了特大雪灾,教师就以“雪灾”为主题活动让孩子们准备一些物资,此教师是以哪个为依据来产生主题的?
A.
教育发展目标
B.
社会生活事件
C.
幼儿生活事件
D.
幼儿的年龄特点
【单选题】Despite these slight differences in operation, cilia and flagella share a similar internal structure. The microtubules in both cilia and flagella are arranged in an elaborate and distinctive pattern. ...
A.
7
B.
9
C.
11
D.
13
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