更多"[简答题]admit I probably wasn't doing "的相关试题:
[单选题]The city center wasn’t as crowded this morning_________.
A.as it usually crowded
B.as it usually does
C.as it usually is
D.than it usually does
[单选题]I was told that my computer wasn’t powerful enough to run that ______.
A.ironware
B.hardware
C.silverware
D.software
[单选题] It wasn't as good a dinner she had promised us.
A.as
B.that
C.which
D.what
[单选题]—Wasn't it Dr Wang who spoke to you just now? —__________.
A.I didn't know he was
B.Yes, it was
C.No, he wasn't
D.Yes, he did
[判断题] 运行部应在CO生产装置场所设置固定CO检测报警仪，相应操作岗位应配置便携式CO检测报警仪，其 报警点应设置在30mg/ m3。
A.正确
B.错误
[判断题]CO2焊时会产生CO有毒气体。
A.正确
B.错误
[单选题]CO2气体保护焊焊接时,CO2 气体在高温下将发生分解,生成 CO 气体以及产 生大量的( ),因此要保证工作环境有良好的通风。
A.氮气
B.烟尘
C.臭氧
D.碳的颗粒
[判断题]CO2 气瓶灌入的是液态 CO2,在室温下,瓶内剩余空间被汽化的 CO2 充满,饱和压力达到 20 MPa 以上。( )(中)
A.正确
B.错误
[判断题]油纸绝缘中局部放电主要产生H2、C2H4，当涉及固体绝缘时产生CO，并与油中原有CO、CO2含量有关：( )
A.正确
B.错误
[单选题]CO2气瓶的容量及可装液态CO2质量为 。
A.40 L，20 kg
B.45 L，20 kg
C.45 L，25 kg
D.40 L，25 kg
[单选题] Both Coca-Cola Co. and Pepsi-Cola Co. are multinational firms in that their soft drinks are bottled throughout the world. This practice illustrates:
A. Backward vertical integration
B. Forward vertical integration
C. Horizontal integration
D. Conglomerate integration
[单选题]CO2气瓶的表面颜色为 色，并标有CO2字样。
A.天蓝
B.银灰
C.铝白
D.橘黄
[判断题]合成气中的主要有效组分是CO和CO2。( )
A.正确
B.错误
[单选题]CO含量达到(____)以上，将会导致CO中毒。
A.A、10%
B.B、20%
C.C、30%
D.D、40%
[多选题]一般来说，CO2/CO为以下（）判断为固体绝缘老化。
A.3
B.9
C.18
D.21
[单选题]CO2焊用不的CO2气瓶采用电热预热器时电压应低于( )
A.60V
B.36V
C.12V
D.6V
