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【单选题】
散货船舱内安装水位探测器,当水位达到或高出货舱内底()时应发出一个声光警报A.
0.5m
B.
1m
C.
1.5m
D.
2m
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举一反三
【简答题】用于驱动各坐标轴进给运动的电动机称为______________。
【简答题】某直线的反方位角为 100° ,则该直线的象限角为()。A. NE60° B. SE30° C. SE80° D. NW80°
【单选题】What time does your mother _____up?
A.
gets usually
B.
usually get
C.
usually gets
D.
get usually
【单选题】The windows after school is over.
A.
usually close
B.
usually closed
C.
are usually closed
D.
are usually closing
【单选题】What does the new Peabody study find?
A.
Pre-K achievements usually do not last long.
B.
The third grade marks a new phase of learning.
C.
The third grade is critical to children's development.
D.
Quality has not been the top concern of pre-K programs.
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