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【判断题】
GB7588-2003《电梯制造与安装安全规范》规定:轿厢应装有仅能在下行时动作的,在达到限速器动作速度时,甚至在悬挂装置断裂的情况下,装置夹紧导轨而使装有125%额定载重量的轿厢制停并保持静止状态。【参考答案】:A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】The heater uses ______________ to heat the air inside the vehicle on most vehicles.
A.
Hot coolant from the engine run through a heater core
B.
Warm air created by the air conditioning system run in reverse
C.
An electrically heated coil
D.
Heat from the exhaust system
【简答题】不同的征税对象是区别不同税种的重要标志。( )
【判断题】A majority of mothers and fathers want to share changing nappies, reading with their kids and to take their children to see a doctor.()
A.
正确
B.
错误
【单选题】和传统教学模式相比，多媒体辅助教学有着明显的优点，下列不属于多媒体教学优点的是______
A.
能弥补视角和空间的局限性
B.
有利于激发学生的学习积极性
C.
能创设生动形象的教学环境
D.
有利于完成情感教学目标
【简答题】There are several air purifiers that work nonstop to ________ fresh air inside.
【单选题】Most whales must come up for air after several minutes, ______ a few can stay under water for an hour or more. [ ]
A.
while
B.
or
C.
for
D.
so
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