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【多选题】
平面一般平衡的解析条件为:A.
合力在x方向投影之和为0
B.
合力在y方向投影之和为0
C.
合力矩为0
D.
所有力过一点
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反馈参考答案：
举一反三
【简答题】用所给词的适当形式填空。 The doctor made his diagnosis ( 诊断 ) after studying the patient’s __________ . (symptom)
【简答题】The doctor made his diagnosis after studying the patient's s______.
【简答题】Passage 3 A doctor checked a man who came to him with different kinds of 1____: headaches, heart trouble, etc., but he found nothing wrong with the man. Then he said, “If you don't tell me what's 2___...
【单选题】The doctor made his diagnosis after studying the patient's __________.
A.
traits
B.
symptoms
C.
mischief
D.
coarse
【简答题】英译汉: a reliable business concern
【简答题】给棉板分梳工艺长度
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