皮皮学，免费搜题
登录
搜题
【单选题】
正弦交流电的三要素是()。A.
电压、电流、频率
B.
最大值、周期、初相位
C.
周期、频率、角频率
D.
瞬时值、最大值、有效值
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】下列运算正确的是 [ ]
A.
a 2 +a 2 =2a 4
B.
a 2 a 4 =2a 8
C.
（﹣3a 2 b 3 ） 2 =6a 4 b 6
D.
a 6 ÷a 3 =a 3 （a≠0）
【单选题】根据套利者对相关合约中价格较高的一边的买卖方向不同，期货价差套利可分为（ ）。
A.
正向套利和反向套利
B.
牛市套利和熊市套利
C.
买入套利和卖出套利
D.
价差套利和期限套利
【单选题】Surprisingly, Susan’s beautiful hair reached below her knees and made _____ almost an overcoat for her.
A.
them
B.
her
C.
itself
D.
herself
【简答题】完形填空。 The passengers on the bus watched with sympathy as Susan made her way carefully up the steps. She paid the driver and then, using her hands to 1 the seats, settled in one of them. It had been a ...
【简答题】完形填空。 The passengers on the bus watched with sympathy as Susan made her way carefully up the steps. She paid the driver and then, using her hands to__1__the seats, settled in one of them. It had been ...
【简答题】完形填空 The passengers on the bus watched with sympathy as Susan made her way carefully，up the steps. She paid the driver and then, using her hands to 1 the seats，settled in one of them. It had been a ye...
【简答题】计算：（2a 3 b 2 ﹣4a 4 b 3 +6a 5 b 4 ）÷（﹣2a 3 b 2 ）．
【单选题】(2011·安徽高考)Surprisingly, Susan's beautiful hair reached below her knees and made ________ almost an overcoat for her.
A.
them
B.
her
C.
itself
D.
herself
【多选题】关于隔姜灸描述正确的是：
A.
生姜片中心需用牙签穿多个小孔
B.
生姜需切成直径为2~3厘米，厚度为2~3毫米的薄片
C.
隔姜灸多用于治疗外感表证
D.
隔姜灸多用于治疗虚寒性疾病
相关题目：