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【单选题】
要测量一个约 80V 的电压量,现有两块电压表供选用, • 一块量程为 300V ,精度等级 0.5 ;一块量程为 100V ,精度 • 等级 1.0 。请问选用哪一块电压表更好?A.
都一样
B.
量程300V，精度等级0.5
C.
量程100V，精度等级1.0
D.
无法判断
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【单选题】人类对宇宙空间的认识，由探索阶段进入开发利用阶段的是 [ ]
A.
原苏联发射的7个“火星”号探测器
B.
美国的“阿波罗”登月计划实施
C.
世界第一架航天飞机试航成功
D.
我国第一颗人造地球卫星发射成功
【单选题】男孩，2岁，胸骨左缘第3～4肋间闻及Ⅳ级粗糙响亮全收缩期杂音，心尖闻及较短Ⅱ级舒张期杂音，P 2 不亢。心电图显示左室高电压伴心肌劳损。X线胸片可能显示（）
A.
肺血增多
B.
肺血减少
C.
肺血正常
D.
肺血两侧不对称
E.
以上都有可能
【单选题】What is the story about?
A.
It is about how Peter and Linda get their money.
B.
It is about how Peter and Linda spend their money.
C.
It is about how Peter and Linda get and spend their money.
【单选题】Being determined is a kind of quality and that's ________ it takes to do anything properly. [ ]
A.
how
B.
which
C.
where
D.
what
【单选题】It ____about 15 minutes ____the theatre.
A.
take, walk
B.
takes, to walk
C.
takes, to walk to
D.
take , to walk
【简答题】I stopped at a grocery store the other day because I was about to go on a long drive and I wanted to buy my favorite for the trip. It wasn’t the store I go to, just one I passed along the way. As I wa...
【简答题】How many coins nave you got in your pocket right now? Three? Two？ A bent one？ With a phonecard you can make up to 200 calls without any change at all. （1） What do you do with it? Go to a telephone box...
【简答题】I stopped at a grocery store the other day because I was about to go on a long drive and I wanted to buy my favorite beverage for the trip. It wasn’t the store I normally go to, just one I passed alon...
【单选题】男孩，2岁，胸骨左缘第3～4肋间闻及Ⅳ级粗糙响亮全收缩期杂音，心尖闻及较短Ⅱ级舒张期杂音，P不亢。心电图显示左室高电压伴心肌劳损。X线胸片可能显示（）
A.
肺血增多
B.
肺血减少
C.
肺血正常
D.
肺血两侧不对称
E.
以上都有可能
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