【简答题】The title of the passage implies that
【简答题】The passage implies that
【多选题】下列对热水箱配件的设置,正确的是( )。
A.
热水箱应设引出室外的通气管,避免热气溢在室内
B.
热水箱应加盖板,防止受尘土、杂物污染,并避免热气四溢
D.
热水箱溢流水位超出冷水补水箱的水位高度,应按热水膨胀量计算
E.
热水箱应设与排水管道直接连接的溢流管和泄水管
【单选题】The author implies that the space age has ______.
A.
weakened the reliability of reported sightings
B.
increased the number of UFO sightings
C.
allowed more scientific study of UFO's
D.
solved the age-old mystery of UFO's
【判断题】完全竞争企业的需求曲线是一条向右下方倾斜的曲线
【单选题】关于完全竞争市场上企业需求曲线的说法,正确的是( )。
D.
整个行业的需求曲线和某个企业的需求曲线是不同的
【简答题】The text implies that.
【简答题】The passage implies that__________