皮皮学，免费搜题
登录
搜题
【单选题】
直流稳压电源中稳压电路的作用( )。
A.
将交流电变为单向脉动的直流电
B.
向负载提供稳定的输出电压
C.
滤除直流电中的波动成分
D.
将220V交流电变为更低电压的交流电
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】禽蛋的蛋白质约占( )。
A.
12%~13%
B.
32%~35%
C.
55%~56%
D.
75%~86%
查看完整题目与答案
【单选题】あの人はこの大学の学生では( )そうです
A.
ない
B.
なさ
C.
なく
D.
なくて
查看完整题目与答案
【判断题】豆粕是目前畜禽最重要的植物性蛋白饲料,约占60%,具有蛋白质含量高、氨基酸丰富且平衡性好等特点,但同时含有胰蛋白酶抑制因子、植物血凝素、非淀粉多糖(半乳甘聚糖)、皂角苷和脲酶等抗营养因子。
A.
正确
B.
错误
查看完整题目与答案
【单选题】下列关于鱼类的说法不正确的选项是 （ ）
A.
鱼类蛋白质含量约为15-20% ，平均为18%左右
B.
鱼类脂肪多由不饱和脂肪酸组成，一般占60%以上
C.
鱼类的矿物质含量丰富，约占8—10%
D.
钙的含量较畜禽肉高，为钙的良好来源。
查看完整题目与答案
【简答题】正等测图的轴间角为
查看完整题目与答案
【单选题】... while it’s more of a PR stunt the keyboards of the future will probably contain at least some emojis. (Para. 6)
A.
… although what the keyboard Swyft Media recently came out with is just a means to attract public attention, the future keyboards will probably include at least some emojis.
B.
… in the future keyboards will include many more emojis than the new keyboard created by Swyft Media has now.
查看完整题目与答案
【单选题】あのひとはこの大学の学生では___そうです。
A.
ない
B.
なさ
C.
なく
D.
なくて
查看完整题目与答案
【简答题】... while it’s more of a PR stunt the keyboards of the future will probably contain at least some emojis. (Para. 6)A. … although what the keyboard Swyft Media recently came out with is just a means to...
查看完整题目与答案
【单选题】下列关于鱼类的说法不正确的是（ ）。
A.
鱼类蛋白质含量约为15-20％，平均为18％左右
B.
鱼类脂肪多由不饱和脂肪酸组成，一般占60％以上
C.
鱼类的矿物质含量丰富，约占6-8％
D.
钙的含量较畜禽肉高，为钙的良好来源
查看完整题目与答案
【单选题】... while it’s more of a PR stunt the keyboards of the future will probably contain at least some emojis. (Para. 6)
A.
… although  the keyboard Swyft Media recently came out with is just a means to attract public attention, the future keyboards will probably include at least some emojis.
B.
… in the future keyboards will include many more emojis than the new keyboard created by Swyft Media has now.
查看完整题目与答案
相关题目：
【单选题】禽蛋的蛋白质约占( )。
A.
12%~13%
B.
32%~35%
C.
55%~56%
D.
75%~86%
查看完整题目与答案
【单选题】あの人はこの大学の学生では( )そうです
A.
ない
B.
なさ
C.
なく
D.
なくて
查看完整题目与答案
【判断题】豆粕是目前畜禽最重要的植物性蛋白饲料,约占60%,具有蛋白质含量高、氨基酸丰富且平衡性好等特点,但同时含有胰蛋白酶抑制因子、植物血凝素、非淀粉多糖(半乳甘聚糖)、皂角苷和脲酶等抗营养因子。
A.
正确
B.
错误
查看完整题目与答案
【单选题】下列关于鱼类的说法不正确的选项是 （ ）
A.
鱼类蛋白质含量约为15-20% ，平均为18%左右
B.
鱼类脂肪多由不饱和脂肪酸组成，一般占60%以上
C.
鱼类的矿物质含量丰富，约占8—10%
D.
钙的含量较畜禽肉高，为钙的良好来源。
查看完整题目与答案
【简答题】正等测图的轴间角为
查看完整题目与答案
【单选题】... while it’s more of a PR stunt the keyboards of the future will probably contain at least some emojis. (Para. 6)
A.
… although what the keyboard Swyft Media recently came out with is just a means to attract public attention, the future keyboards will probably include at least some emojis.
B.
… in the future keyboards will include many more emojis than the new keyboard created by Swyft Media has now.
查看完整题目与答案
【单选题】あのひとはこの大学の学生では___そうです。
A.
ない
B.
なさ
C.
なく
D.
なくて
查看完整题目与答案
【简答题】... while it’s more of a PR stunt the keyboards of the future will probably contain at least some emojis. (Para. 6)A. … although what the keyboard Swyft Media recently came out with is just a means to...
查看完整题目与答案
【单选题】下列关于鱼类的说法不正确的是（ ）。
A.
鱼类蛋白质含量约为15-20％，平均为18％左右
B.
鱼类脂肪多由不饱和脂肪酸组成，一般占60％以上
C.
鱼类的矿物质含量丰富，约占6-8％
D.
钙的含量较畜禽肉高，为钙的良好来源
查看完整题目与答案
【单选题】... while it’s more of a PR stunt the keyboards of the future will probably contain at least some emojis. (Para. 6)
A.
… although  the keyboard Swyft Media recently came out with is just a means to attract public attention, the future keyboards will probably include at least some emojis.
B.
… in the future keyboards will include many more emojis than the new keyboard created by Swyft Media has now.
查看完整题目与答案