皮皮学,免费搜题
登录
搜题
【单选题】
肾上腺素对心脏的作用是
A.
激动α受体,使心率加快,传导加快,收缩力加强
B.
阻断β受体,使心率加快,传导减慢,收缩力减弱
C.
激动α受体和β受体,使心率加快,传导加快,收缩力减弱
D.
激动β受体,使心率加快,传导加快,收缩力加强
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
【多选题】细菌在半固体培养基中的生长现象正确的是
A.
有鞭毛细菌只沿穿刺线生长
B.
无鞭毛细菌只沿穿刺线生长
C.
有鞭毛细菌沿穿刺线扩散呈毛刷状、云雾状
D.
无鞭毛细菌沿穿刺线扩散呈毛刷状、云雾状
E.
都呈扩散生长
【单选题】The American economy is still in trouble,________ the Chinese economy is beginning to pick up.
A.
when
B.
however
C.
while
D.
therefore
【单选题】If an economy’s GDP rises, then it must be the case that the economy’s
A.
income and expenditure both rise.
B.
income rises and saving falls.
C.
income and saving both rise.
D.
income rises and expenditure falls.
【简答题】用括号里的词的正确形式填空。 1. My grandpa is going to have her (90) birthday. 2. We are looking for a student (call)Tom. 3. While we (wait) for the bus , a girl (run) up to us. 4. - you ever (be) to Beijing? -Yes,...
【简答题】根据中文提示,用词组的适当形式填空,每空一词。 1. With the help of Mr. Chen, I have _______ (取得进步) in English. 2. When it rains or when the wind blows, the earth is _______ (带走). 3. We are _______ (应该) do everything we can ...
【判断题】情绪ABC理论指出情绪的产生就是由客观事物引起的,是人产生情绪和行为后果的诱发性事件,对人的情绪起决定作用
A.
正确
B.
错误
【判断题】“你住在哪里啊?”中的“啊”读作“哇(wa)”。
A.
正确
B.
错误
【判断题】在半固体培养基中只沿着穿刺线生长者为有鞭毛能运动的细菌 。( )
A.
正确
B.
错误
【简答题】What is the Chinese meaning of annual report and financial! fiscal year? What are the three financial statements in a company's annual report?
【单选题】At the beginning of the fiscal year, interest rates climbed ______ 3. 2 percent, up half a point from the previous year.
A.
by
B.
in
C.
to
D.
on
相关题目: