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【单选题】
总体国家安全观坚持国家利益至上,以()安全为基础。A.
人民;
B.
政治;
C.
经济;
D.
军事;
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Based on the sectional view of a cylindrical compression spring, t means: (Single option: 10 points)
A.
Pitch
B.
None
C.
The active coils
D.
Lead
【多选题】Non-verbal means of communication are ( ) .(more than one option is possible)
A.
speech
B.
gestures
C.
mimics
D.
postures
【单选题】In the following figure, da means: (Single option: 10 points)
A.
Addendum-circle diameter
B.
Pitch-circle diameter
C.
eddendum-circle diameter
D.
None
【简答题】Multiple selection questions (single option) In general magnitude resonant frequency characteristic, wider curve means:
【单选题】In the following figure, da means: (Single option: 10 points)
A.
Addendum-circle diameter
B.
Pitch-circle diameter
C.
Deddendum-circle diameter
D.
None
【单选题】In the following figure, d means: (Single option: 10 points)
A.
Pitch-circle diameter
B.
Addendum-circle diameter
C.
eddendum-circle diameter
D.
None
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