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【单选题】
四行程发动机一个工作循环曲轴转动( )A.
180
B.
360
C.
450
D.
720
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举一反三
【单选题】— I am going to New York this evening. Is there a flight to New York then? — There ____ be a flight. But you'd better call the booking office to make sure. [ ]
A.
must
B.
may
C.
would
D.
will
【简答题】能指示 pH 值相对大小的方法不包括 (
) 。 (3.0分)A. 酸碱指示剂 B. pH 试纸 C. 淀粉— KI 试纸 D. pH 测定仪
【单选题】—I’m going to New York this evening. Is there a flight to New York then? —There____ be a flight. But you’d better call the booking office to make sure.
A.
must
B.
may
C.
would
D.
will
【简答题】已知A的ASCII码值是65,则ASCII码值为100的字符是( )。
【单选题】Flight 172 to New York is now ______ at Gate No. 37.
A.
aboard
B.
abroad
C.
boarded
D.
boarding
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