皮皮学，免费搜题
登录
搜题
【单选题】
A: Pi1ot Station, this is Eastern Sea calling. Over.B: Eastern Sea, this is Pi1ot Boat. P1ease call me on ch12, 15 minutes before your arriva1.Q: What is Eastern Sea asked to do?A.
Contact Pi1ot Station on channe1 15 after her arriva1
B.
Contact Pi1ot Station on channe1 12 before her arriva1
C.
Contact Pi1ot Station on channe1 15 before her arriva1
D.
Contact Pi1ot Station on channe1 12 after her arriva1
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】模拟设备是供用户调试工程的虚拟的设备。该构件可以产生标准的()信号。其幅值和周期都可以任意设置。
A.
正弦波,方波,三角波
B.
方波,三角波,锯齿波
C.
正弦波,三角波,锯齿波
D.
正弦波,方波,三角波,锯齿波
【单选题】若要填充矩形颜色,可以使用下列哪个函数 ?
A.
imagefill()
B.
imagearc()
C.
imagechar()
D.
imagefilledrectangle()
【简答题】There is a saying “Beauty is in the eye of the beholder.” What one person considers beautiful may not be beautiful to another. When we talk about beauty in people, we often refer to their physical att...
相关题目：