皮皮学，免费搜题
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【单选题】
色散型红外分光光度计检测器多用A.
.电子倍增器;
B.
光电倍增管
C.
高真空热电偶
D.
线电线圈。
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Christopher Reeve ________ an operation that helped restore some feeling to his upper body.
A.
underwent
B.
underlined
C.
underlay
D.
underarmed
【单选题】Christopher Reeve said he was far busy with living to think of up.
A.
so,giving
B.
very, giving
C.
too, given
D.
too, giving
【判断题】3. _______Christopher Reeve is an actor who
played Superman in the movies.
A.
正确
B.
错误
【单选题】下列不属于同步信号为锯齿波的触发电路的优点是()。
A.
不受电网电压波动与波形畸变的影响
B.
抗干扰能力强
C.
移相范围宽
D.
整流装置的输出直流平均电压与控制电压不是线性关系
【简答题】完形填空 Christopher Reeve is best known as the man who acted Superman always fighting against the forces of evil(邪恶). He came to __ 1 ___ the victory of good over bad. Now he has taken on his __ 2 ___ fi...
【单选题】下列中不属于同步信号为锯齿波地触发电路地优点是（）。
A.
不受电网电压波动与畸变的影响
B.
抗干扰能力强
C.
移相范围宽
D.
整流装置的输出直流平均电压与控制电压不是线性关系
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