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【单选题】
46下面哪一条不是退磁的正当理由?A.
剩磁会干扰射线探伤时的辐射频谱
B.
剩磁会吸引铁屑或小颗粒，造成擦伤或机械磨损
C.
剩磁会影响装在零件附近的仪表工作精度
D.
剩磁会影响后加工中焊接电弧
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反馈参考答案：
举一反三
【单选题】Opinion polls repeatedly tell us that the only thing Americans worry about more than the environment is their health. This is【B1】understandable, for health is obviously【B2】to illness. What makes today...
A.
entirely
B.
chiefly
C.
exclusively
D.
mostly
【单选题】What is the only thing the driver of the future car has to do?
A.
Choose the right route.
B.
Refuel the car regularly.
C.
Start the engine.
D.
Tell the computer where to go.
【简答题】外部存储器包括硬盘、（）、（）。
【单选题】Which of the following sentences is not true about “connecting the dots”?
A.
“Connecting the dots” uses the rhetorical device of “metaphor”.
B.
“Dots” refer to the punctuation mark meaning “period”.
C.
“Connecting the dots” is a puzzle where the person draws lines to connect a sequence of numbered dots to reveal a picture.
D.
“Connecting the dots” means that your current seemingly useless experiences would be of significance when the occasion demands in the future.
【简答题】The only thing now standing()of further progress is lack of money. A)on the way B)in the way C)by the way D)off the way
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