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【多选题】
引压导管应按( )距离敷设,并保持垂直与水平面之间的夹角不得小于( )的倾斜角度。A.
15°
B.
规定
C.
最短
D.
84°
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举一反三
【简答题】I don’t know whether you happen_______, but I’m going to study in the U.S.A. this September. A. to be heard B. to be hearing C. to hear D. to have heard
【单选题】I don’t know whether you happen ____ it, but I’m going to study in the U.S.A. this September. A. to be heard
B.
to be hearing
C.
to hear
D.
to have heard
【简答题】若有定义 String to="I am a good cat";则to.indexOf("a",7)的值为( )
【单选题】I don't know whether you happen ______ , but I'm going to study in the U.S.A.this September.
A.
to be heard
B.
to be hearing
C.
to hear
D.
to have heard
【简答题】I’m going to check up ______the time of the train.
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