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【简答题】
螺杆螺纹的牙型有哪几种?各有什么特点
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【单选题】在固体中可以传播的超声波型有（）。
A.
纵波
B.
横波
C.
表面波、板波
D.
A、B和C
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【简答题】I doubt whether he can _______ his efforts much longer as he looks very tired.A. hold up B. hold on C. keep on D. keep up
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【单选题】I doubt whether he can ______ his efforts much longer as he looks very tired.
A.
keep up
B.
keep on
C.
keep in
D.
keep at
查看完整题目与答案
【单选题】I doubt whether he can _______ his efforts much longer as he looks very tired.
A.
hold up
B.
hold on
C.
keep on
D.
keep up
查看完整题目与答案
【简答题】I doubt whether he can ( ) his efforts much longer as he looks very tired.A. keep up B. keep on C. keep in D. keep at
查看完整题目与答案
【单选题】日本国内的首个连环漫画是()。
A.
美国漫画《亲爷教育》
B.
日本漫画《森林大帝》
C.
《朝日俱乐部》
D.
《铁壁阿童木》
查看完整题目与答案
【单选题】I doubt whether he can ______ his efforts much longer as he looks very tired.
A.
keep out
B.
keep in
C.
keep on
D.
keep at
查看完整题目与答案
【单选题】I doubt ______.
A.
whether he can come
B.
if he can come or not
C.
while he will be here
D.
that he will come
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【简答题】I doubt whether he can _______ his efforts much longer as he looks very tired. (4.0分)A. hold up B. hold on C. keep on D. keep up
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【单选题】I doubt whether he can ____ his efforts much longer as he looks very tired.
A.
keep up
B.
keep on
C.
keep back
D.
keep from
查看完整题目与答案
相关题目：
【单选题】在固体中可以传播的超声波型有（）。
A.
纵波
B.
横波
C.
表面波、板波
D.
A、B和C
查看完整题目与答案
【简答题】I doubt whether he can _______ his efforts much longer as he looks very tired.A. hold up B. hold on C. keep on D. keep up
查看完整题目与答案
【单选题】I doubt whether he can ______ his efforts much longer as he looks very tired.
A.
keep up
B.
keep on
C.
keep in
D.
keep at
查看完整题目与答案
【单选题】I doubt whether he can _______ his efforts much longer as he looks very tired.
A.
hold up
B.
hold on
C.
keep on
D.
keep up
查看完整题目与答案
【简答题】I doubt whether he can ( ) his efforts much longer as he looks very tired.A. keep up B. keep on C. keep in D. keep at
查看完整题目与答案
【单选题】日本国内的首个连环漫画是()。
A.
美国漫画《亲爷教育》
B.
日本漫画《森林大帝》
C.
《朝日俱乐部》
D.
《铁壁阿童木》
查看完整题目与答案
【单选题】I doubt whether he can ______ his efforts much longer as he looks very tired.
A.
keep out
B.
keep in
C.
keep on
D.
keep at
查看完整题目与答案
【单选题】I doubt ______.
A.
whether he can come
B.
if he can come or not
C.
while he will be here
D.
that he will come
查看完整题目与答案
【简答题】I doubt whether he can _______ his efforts much longer as he looks very tired. (4.0分)A. hold up B. hold on C. keep on D. keep up
查看完整题目与答案
【单选题】I doubt whether he can ____ his efforts much longer as he looks very tired.
A.
keep up
B.
keep on
C.
keep back
D.
keep from
查看完整题目与答案