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【判断题】
270. ( )圆弧插补可使刀具按所需圆弧运动,运动方向为顺时针方向。
A.
正确
B.
错误
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举一反三
【单选题】He could not remember ________ he should return the book.
A.
what
B.
which
C.
when
D.
how
【单选题】You will not have to remind him. He will remember to return the book to me _____.
A.
in a way
B.
by no means
C.
at a time
D.
sooner or later
【单选题】I (remember) clearly (to return) the book to him last Wednesday, but now he (says) that (I didn' t).
A.
remember
B.
return
C.
says
D.
I didn't
【多选题】有机化合物的特性
A.
对热不稳定,易燃烧
B.
熔沸点较低
C.
难溶于水,易溶于有机溶剂
D.
反应速度较慢、产率较低、产物较复杂
【单选题】随食物进人胃内的唾液淀粉酶不再消化淀粉的原因是_
A.
酸碱度改变
B.
唾液淀粉酶只能催化一次反应
C.
温度改变
D.
胃中没有淀粉
【简答题】在特殊情况下,Tom才会寻求解释。 __________, Tom would ask for explanations.
【简答题】After learning the five-part materials, here's the quiz you'll need to finish. You can type up your answers here or upload a picture of your answers, but in either way remember to write the number bef...
【多选题】有机化合物的特性?
A.
一般有机化合物都容易燃烧。
B.
熔点、沸点较低。
C.
难容于水,易溶于有机溶剂。
D.
反应速度较慢、产率较低、产物较复杂。
【单选题】听力原文:M: Did you remember to bring the book you promised me? W: I'm sorry. It completely slipped my mind. I'll bring it tomorrow. Q: Why did the woman apologize? (15)
A.
She had lost the book.
B.
He had brought the wrong book.
C.
She had forgotten the book.
D.
He wasn't able to bring the book.
【单选题】I (remember) clearly (to return) the book to him last Wednesday, but now he (says) that (I didn't).
A.
remember
B.
to return
C.
says
D.
I didn't
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