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【单选题】
下列商品中( )不太适宜采用黑色背景。A.
手机
B.
耳坠
C.
发卡
D.
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
【简答题】普通三角螺纹的牙形角为_____度,梯形螺纹的牙形角为_____度。
【单选题】According to the passage, what is the main task of 'executive coaching'?
A.
Teaching the executive skills they don't have before.
B.
Assisting executives to run their businesses.
C.
Making a series of rules for executives to manage their subordinates.
D.
Improving the team work of staff in the executives' organizations.