皮皮学，免费搜题
登录
搜题
【单选题】
在一种酶实验中，采用的底物浓度大大低于K值，此时反应速度（）
A.
接近最大反应速度
B.
显示零级动力学特征
C.
与底物的浓度成正比
D.
不依赖酶的浓度
E.
以上都不是
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】2和32的等差中项是(),等比中项为()
查看完整题目与答案
【单选题】若m是2和8的等比中项，则圆锥曲线x 2 + y 2 m =1 的离心率为（　　）
A.
3 2
B.
5
C.
3 2 或 5 2
D.
3 2 或 5
查看完整题目与答案
【单选题】Refer to the figure accompanying Question 5. At Point 3, the trader is said to be which of the following?
A.
Conservative in time of entry and aggressive in price on entry.
B.
Aggressive in time of entry and conservative in price on entry.
C.
Aggressive in time of entry and aggressive in price on entry.
D.
Conservative in time of entry and conservative in price on entry.
查看完整题目与答案
【单选题】? Look at questions 1-5. ? In each question, which sentence is correct? ? For each question, mark one letter (A, B or C) on your Answer Sheet. Present this card to receive 10% off purchase in the Visi...
A.
Visitors can get a 10 % discount with this card.
B.
Visitors can get 10% of the selling items in the bookstore.
C.
Visitors need to pay only 10% of the price for the books bought.
查看完整题目与答案
【单选题】(2016全国联赛,87)许多生物体的隐性等位基因很不稳定,以较高的频率逆转为野生型。玉米的一个基因C,决定果实中产生红色色素;等位基因cm1或cm2不会产生红色素。cm1在玉米果实发育中较晚发生逆转,但频率高;cm2较早发生逆转,而逆转频率低。据此,基因型为cm1cm2的植株自花授粉所得玉米果实可能具有的特征是:
A.
一半的果实具有小而少的红斑
B.
一半的果实具有大而多的红斑
C.
一半的果实既有小红斑，又有大红斑，小红斑数量更多
D.
一半的果实无色，因为没有C基因，cm1或cm2不会产生红色素
查看完整题目与答案
【判断题】若等比数列的首项为4,公比为2,则其第3项和第5项的等比中项是32
A.
正确
B.
错误
查看完整题目与答案
【单选题】?Look at questions 1-5. ?In each question, which sentence is correct? ?For each question, mark one letter (A, B or C) on your Answer Sheet. Perfect for transporting computers, audio visual equipment a...
A.
It is a perfect way of transportation.
B.
It is ideal for moving valuable equipment.
C.
It can be used to transfer home appliances.
查看完整题目与答案
【单选题】许多生物体的隐性等位基因很不稳定，以较高的频率逆转为野生型。玉米的一个基因C，决定果实中产生红色色素；等位基因cm1或cm2不会产生红色素。cm1在玉米果实发育中较晚发生逆转，但频率高；cm2较早发生逆转，而逆转频率低。据此，基因型为cm1cm2的植株自花授粉所得玉米果实可能具有的特征是：（）
A.
一半的果实具有小而少的红斑
B.
一半的果实具有大而多的红斑
C.
一半的果实既有小红斑，又有大红斑，小红斑数量更多
D.
一半的果实无色，因为没有C基因，cm1或cm2不会产生红色素
查看完整题目与答案
【判断题】压电传感器输出信号具有正负方向：
A.
正确
B.
错误
查看完整题目与答案
【单选题】?Look at questions 1-5. ?in each question, which sentence is correct? ?For each question, mark one letter (A, B or C) on your Answer Sheet.
A.
Payments for overtime are made at the end of the month.
B.
Applications to do overtime must be signed by supervisors.
C.
Claims for overtime should be approved by supervisors.
查看完整题目与答案
相关题目：
【简答题】2和32的等差中项是(),等比中项为()
查看完整题目与答案
【单选题】若m是2和8的等比中项，则圆锥曲线x 2 + y 2 m =1 的离心率为（　　）
A.
3 2
B.
5
C.
3 2 或 5 2
D.
3 2 或 5
查看完整题目与答案
【单选题】Refer to the figure accompanying Question 5. At Point 3, the trader is said to be which of the following?
A.
Conservative in time of entry and aggressive in price on entry.
B.
Aggressive in time of entry and conservative in price on entry.
C.
Aggressive in time of entry and aggressive in price on entry.
D.
Conservative in time of entry and conservative in price on entry.
查看完整题目与答案
【单选题】? Look at questions 1-5. ? In each question, which sentence is correct? ? For each question, mark one letter (A, B or C) on your Answer Sheet. Present this card to receive 10% off purchase in the Visi...
A.
Visitors can get a 10 % discount with this card.
B.
Visitors can get 10% of the selling items in the bookstore.
C.
Visitors need to pay only 10% of the price for the books bought.
查看完整题目与答案
【单选题】(2016全国联赛,87)许多生物体的隐性等位基因很不稳定,以较高的频率逆转为野生型。玉米的一个基因C,决定果实中产生红色色素;等位基因cm1或cm2不会产生红色素。cm1在玉米果实发育中较晚发生逆转,但频率高;cm2较早发生逆转,而逆转频率低。据此,基因型为cm1cm2的植株自花授粉所得玉米果实可能具有的特征是:
A.
一半的果实具有小而少的红斑
B.
一半的果实具有大而多的红斑
C.
一半的果实既有小红斑，又有大红斑，小红斑数量更多
D.
一半的果实无色，因为没有C基因，cm1或cm2不会产生红色素
查看完整题目与答案
【判断题】若等比数列的首项为4,公比为2,则其第3项和第5项的等比中项是32
A.
正确
B.
错误
查看完整题目与答案
【单选题】?Look at questions 1-5. ?In each question, which sentence is correct? ?For each question, mark one letter (A, B or C) on your Answer Sheet. Perfect for transporting computers, audio visual equipment a...
A.
It is a perfect way of transportation.
B.
It is ideal for moving valuable equipment.
C.
It can be used to transfer home appliances.
查看完整题目与答案
【单选题】许多生物体的隐性等位基因很不稳定，以较高的频率逆转为野生型。玉米的一个基因C，决定果实中产生红色色素；等位基因cm1或cm2不会产生红色素。cm1在玉米果实发育中较晚发生逆转，但频率高；cm2较早发生逆转，而逆转频率低。据此，基因型为cm1cm2的植株自花授粉所得玉米果实可能具有的特征是：（）
A.
一半的果实具有小而少的红斑
B.
一半的果实具有大而多的红斑
C.
一半的果实既有小红斑，又有大红斑，小红斑数量更多
D.
一半的果实无色，因为没有C基因，cm1或cm2不会产生红色素
查看完整题目与答案
【判断题】压电传感器输出信号具有正负方向：
A.
正确
B.
错误
查看完整题目与答案
【单选题】?Look at questions 1-5. ?in each question, which sentence is correct? ?For each question, mark one letter (A, B or C) on your Answer Sheet.
A.
Payments for overtime are made at the end of the month.
B.
Applications to do overtime must be signed by supervisors.
C.
Claims for overtime should be approved by supervisors.
查看完整题目与答案