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【简答题】
液化石油气钢瓶属于 ( ) 。 A. 高压气瓶 B. 中压气瓶 C. 低压气瓶 D. 常温气瓶
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【判断题】男性手淫射出来的精液含有蛋白质、核糖核酸和碳水化合物。有人认为这些营养成分跟一杯牛奶的营养成分是近似的,一次手淫射精之后,喝一杯牛奶或者吃一个鸡蛋就可以补充回来。但是精液里面包含有各种各样的生命信息,男人射的精可以传宗接代。牛奶可以吗?答案是不言而喻的。所以说手淫无害健康的说法会误导很多年青人。
A.
正确
B.
错误
【简答题】通常情况下空气中CO 2 的体积分数为0.030%，当空气中CO 2 的体积分数超过0.050%时，会引起明显的温室效应。为减小和消除CO 2 对环境的影响，一方面世界各国都在限制其排放量，另一方面科学家加强了对CO 2 创新利用的研究。 ⑴目前，用超临界CO 2 （其状态介于气态和液态之间）代替氟利昂作致冷剂已成为一种趋势，这一做法对环境的积极意义在于 。 ⑵最近有科学家提出“绿色自由”构想：把...
【单选题】He pretended English when his father entered.
A.
reading
B.
to reading
C.
to be reading
D.
read
【单选题】He had read two novels,but his father asked him to read ______ third one.
A.
one
B.
another
C.
the
D.
a
【简答题】弧焊机器人作业条件的登录,主要涉及以下几个方面:1在__ __命令中设定焊接开始规范;2在__ __命令中设定焊接结束规范;3在__ __命令中指定焊接开始动作次序(以文件形式给定);4在__ __命令指定焊接结束动作次序(以文件形式给定);5手动调节保护气体流量。
【单选题】You are going to read a magazine article in which a father describes his relationship with his son. For questions 8-14, choose the answer (A, B, C or D) which you think fits best according to the text...
A.
He worried about the problems.
B.
He saw what could be done.
C.
He thought the family would suffer.
D.
He wondered if he should take it.
【简答题】试述一般机械设备电气大修工艺应包括的内容
【单选题】When his father came into his room, Tom pretended _______ a book.
A.
to read
B.
to have read
C.
reading
D.
to be reading
相关题目：
【单选题】He pretended English when his father entered.
A.
reading
B.
to reading
C.
to be reading
D.
read