皮皮学,免费搜题
登录
搜题
【多选题】
可用来实现交流电机速度控制的装置是……( )
A.
CNC
B.
PLC
C.
变频器
D.
伺服驱动器
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】双子叶植物根茎的构造中维管束为_____
A.
无限外韧型
B.
有限外韧型
C.
周韧型
D.
周木型
E.
辐射型
【单选题】下列关于叶绿体和线粒体的叙述,正确的是
A.
细胞生命活动所需的能量均来自线粒体
B.
线粒体基质和叶绿体基质所含的酶种类均相同
C.
叶绿体在光下和黑暗下均能合成ATP
D.
线粒体和叶绿体均含有少量的DNA
【单选题】— What do you think of sports shows? — _____ [     ]
A.
I think so
B.
I don't think so
C.
I love them
【单选题】一组数据的最大值与最小值之差称为
A.
方差
B.
极差
C.
误差
D.
标准差
【单选题】一组数据的最大值与最小值之差称为
A.
平均差
B.
标准差
C.
极差
D.
四分位差
【简答题】Once I thought love meant flowers, gifts and sweet kisses. So, I really ___whether there is love between my parents. Everyday they are very busy ___ to earn money to pay the high schooling for me. The...
【单选题】— I'd love to go to Italy. — ______. [     ]
A.
So do I
B.
So am I
C.
Neither am I
D.
So would I
【单选题】I _____________ so terrible now if I ____________ so much pizza for lunch.
A.
would not had felt / ate
B.
wouldn’t feel / hadn’t eaten
C.
wouldn’t felt / hadn’t eaten
D.
wouldn’t have felt / had eaten
【简答题】补全对话。 A: ____1____ I help you? B: I'd ____2 ____ a pizza, please. A: What ___ 3___ pizza ___ 4 ___ you like? B: I'd like a large pizza. A: And ___ 5 ___ would you like ___ 6 ___ it? B: I'd like mushro...
【单选题】下列关于叶绿体和线粒体的叙述,正确的是
A.
细胞生命活动所需的能量均来自线粒体
B.
线粒体和叶绿体均含有少量的 DNA
C.
线粒体基质和叶绿体基质所含的酶种类均相同
D.
叶绿体在光下和黑暗下均能合成 ATP
相关题目: