选择题:17.When the pilot saw the target, he immediately _

题目内容:
17.
When the pilot saw the target, he immediately _______ the headquarters.  
(A) radioed
(B) radioed to
(C) informed of
(D) announced
参考答案:

现有钢、铸铁两种棒材,其直径相同。从承载能力和经济效益两个方面考虑,合理选择方案是A)1杆为钢,2杆

现有钢、铸铁两种棒材,其直径相同。从承载能力和经济效益两个方面考虑,合理选择方案是A)1杆为钢,2杆为铸铁;B)1杆为铸铁,2杆为钢;C)两杆均为钢;D)两杆均

查看答案