皮皮学，免费搜题
登录
搜题
【单选题】
可以在化学实验室穿着的鞋是A.
凉鞋
B.
高跟鞋
C.
拖鞋
D.
球鞋
E.
都可以
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
【简答题】已知单位负反馈系统,开环传递函数为(2s+2)/(s^2+2s+1) (1)利用MATLAB对该闭环系统建立传递函数模型; (2)将第一问中求得的传递函数模型转化为零极点增益模型和状态空间表达式。 要求:上传程序代码及运行结果。
【单选题】听力原文：W: Jack, would you mind driving me to the station? M: Sure, why not! Q: How does Jack respond to the question? (7)
A.
He refused to drive her.
B.
He is glad to drive her.
C.
He forgot his driver's license.
D.
He has a new car.
【单选题】听力原文：W: Jack, would you mind driving me to the station? M: Sure, why not? Q: How does Jack respond to the question? (5)
A.
He refused to drive her.
B.
He has a new car.
C.
He forgot his driver's license.
D.
He is glad to drive her.
【单选题】Jack was soon told ________ he did was not necessary.
A.
why
B.
that
C.
how
D.
why what
【单选题】近日，有人称甲状腺癌在癌症中的发病率大幅升高，主要原因是长期食用加碘盐。而据专家介绍，世界卫生组织推荐成人每日碘摄入量为150—300微克，欧盟和美国的医学研究机构认为成人碘摄入可耐受上限每日600微克和1100微克。我国碘盐平均含碘量为30毫克／千克。按每人每日摄人盐5—10克计算，每日摄碘量约为150-300微克。扣除烹调和人体代谢的损失，碘摄人量不会高于世界卫生组织推荐量。 这段文字意在说明...
A.
食用碘盐易诱发甲状腺癌无根据
B.
过量食用碘盐不利于身体健康
C.
甲状腺癌发病与多种因素相关
D.
我国居民碘摄入量符合安全标准
【简答题】机械设备修理分为几类。
【单选题】听力原文：W: Jack, would you mind driving me to the station? M: Sure, why not! Q: How does Jack respond to the question? (12)
A.
He refused to drive her.
B.
He is glad to drive her.
C.
He forgot his driver's license.
D.
He has a new car.
相关题目：