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【单选题】
下列各项中，不属于认证依据的是( )。A.
相关技术规范
B.
相关技术规范的强制性要求
C.
相关技术规范的强制性标准
D.
由国际标准组织推荐的相关技术报告
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【单选题】From the episode we know that Lawrence’s attitude towards challenges is ________.
A.
very enthusiastic
B.
confident and positive
C.
afraid of making mistakes
【简答题】Chinese people are now suffering from a new deadly ___1____ caused by Coronavirus. People have heard a lot about this new disease, so in today’s episode, we will explore what are the causes, ____2____...
【多选题】关于执行器气开和气关特性,下列说法正确的是()
A.
正作用执行机构和反装阀芯组合为气开特性
B.
气开阀在气源故障时是关闭的
C.
气关阀在气源故障时是关闭的
D.
气开和气关选择是保证控制系统闭环负反馈
【简答题】Converstation one 请将听力答案字母写到后面空格内 Conversation One W: The name of the TV show we wish to produce is Science Nation. M: Please tell us more. What will Science Nation be about? W: It will be about scien...
【单选题】Look at this passage from the episode: "We might have a witness! But how do we know who chewed that gum?"
A.
witness is someone who __________.
B.
、sells something to raise money
C.
、arrests someone who commits a crime
D.
、follows someone from place to place
E.
、notices something that is taking place
【简答题】Lawrence is in the office (1) for and receiving business phone calls when Susan calls to remind him of (2) . Lawrence calls back, and Susan assumes a business tone intentionally. Lawrence knows...
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