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【单选题】
如图所示OA杆绕O轴朝逆时针向转动，圆盘沿OA杆滚动而无滑动。已知圆盘的质量m=20kg，半径R=10cm。在图示位置时，OA杆的倾角为30°，其转动的角速度ω1=1rad/s，圆盘相对OA杆转动的角速度ω2=4rad/s， ，则此时圆盘的动量大小为( )。
A.
K=4N·S
B.
C.
D.
K=8N·S
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参考答案：
举一反三
【简答题】I. Cloze Questions 36 to 45 are based on the following passage. A. intimate B. attractive C. person D. attachment E. satisfied F. receipt G. contaminate H. replace I. special J...
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【单选题】下列哪个不是半导体的特性( )
A.
光敏性
B.
热敏性
C.
湿敏性
D.
掺杂性
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【单选题】某企业2012年3月份发生的业务有：（1）计提生产车间用固定资产折旧80万元；（2）发生行政管理部门人员工资50万元；（3）支付广告费用30万元；（4）支付行政管理部门人员劳动保险费10万元；（5）计算本月因生产经营活动应交纳的城市维护建设税1万元；（6）期末结转发生的无形资产研究费用20万元；（7）计提长期借款利息10万元。（非筹建期且不符合资本化条件）假定除上述业务外，没有发生其他业务。要求：...
A.
100
B.
90
C.
80
D.
120
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【单选题】喹诺酮类抗菌药的主要作用机制是
A.
干扰细菌细胞壁合成
B.
损伤细胞膜
C.
影响细菌蛋白质的合成
D.
抑制细菌核酸的形成
E.
抑制固醇类药物的合成
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【单选题】The ______ is a receipt for goods shipped on board a vessel, signed by the person (or his agent) who contracts to carry them, and stating the conditions in which the goods were delivered to (and recei...
A.
B/N
B.
S/O
C.
M/R.
D.
B/L
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【单选题】喹诺酮类药物抗菌作用机制是
A.
抑制细菌二氢叶酸还原酶
B.
抑制细菌蛋白质合成
C.
抑制细菌RNA的合成
D.
抑制细菌DNA回旋酶
查看完整题目与答案
【多选题】专四完形填空新题型模拟题( 4 )
A.
intimate
B.
attractive
C.
person
D.
attachment
E.
satisfied
F.
receipt
G.
contaminate
H.
replace
I.
special
J.
stick K.vigorously L. advice M. circumstances N. directly O. petitions Complaints should be made to a responsible person. Go back to the shop where you bought the goods, taking with you any (1________) you may have. Ask to see the buyer in a large store. In a small store the assistant may also be the owner so you can complain (2_______). In a chain store ask to see the manager. Even the bravest person finds it difficult to complain face to face, so if you do not want to do it in (3_______), write a letter. Be sure to ( 4_______ ) to the facts and keep a copy of what you write. At this stage you should give any receipt numbers, but you should not need to give receipts or other papers to prove you bought the article. If you are not (5________) with the answer you get, or if you do not get a reply, write to the managing director of the firm, shop, or organization. Be sure to keep copies of your own letters and any you receive. If your complaint is a just one, the shopkeeper may offer to (6______) or repair the faulty article. You may find this an (7_______) solution. In certain cases you may have the right to refuse the goods and ask for your money back, but this is only where you have hardly used the goods and have acted at once. Even when you cannot refuse the goods you may be able to get some money back as well. And if you have suffered some (8_______) loss, if for example a new washing machine tears your clothes, you might receive money to replace them. If the shopkeeper offers you a credit note to be used to buy goods in the same shops but you would rather have money, say so. If you accept a credit note remember that later you will not be able to ask for your money. If the shopkeeper refuses to give you money, ask for (9______) from your Citizens' Advice Bureau before you accept a credit note. In some cases the shopkeeper does not have to give you your money back--if, for example, he changes an article simply because you don't like it or it does not fit. He does not hive to take back the goods in these (10_________).
查看完整题目与答案
【简答题】h ________ n . a person who is an authority on history and who studies it and writes about it prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
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【单选题】喹诺酮类抗菌药的主要作用机制是（）
A.
干扰细菌细胞壁合成
B.
损伤细胞膜
C.
影响细菌蛋白质的合成
D.
抑制细菌核酸的合成
E.
抑制固醇类药物的合成
查看完整题目与答案
【单选题】下列( )项不是常见口服固体制剂的操作。
A.
粉碎
B.
混合
C.
制粒
D.
灌装
查看完整题目与答案
相关题目：
【简答题】I. Cloze Questions 36 to 45 are based on the following passage. A. intimate B. attractive C. person D. attachment E. satisfied F. receipt G. contaminate H. replace I. special J...
查看完整题目与答案
【单选题】下列哪个不是半导体的特性( )
A.
光敏性
B.
热敏性
C.
湿敏性
D.
掺杂性
查看完整题目与答案
【单选题】某企业2012年3月份发生的业务有：（1）计提生产车间用固定资产折旧80万元；（2）发生行政管理部门人员工资50万元；（3）支付广告费用30万元；（4）支付行政管理部门人员劳动保险费10万元；（5）计算本月因生产经营活动应交纳的城市维护建设税1万元；（6）期末结转发生的无形资产研究费用20万元；（7）计提长期借款利息10万元。（非筹建期且不符合资本化条件）假定除上述业务外，没有发生其他业务。要求：...
A.
100
B.
90
C.
80
D.
120
查看完整题目与答案
【单选题】喹诺酮类抗菌药的主要作用机制是
A.
干扰细菌细胞壁合成
B.
损伤细胞膜
C.
影响细菌蛋白质的合成
D.
抑制细菌核酸的形成
E.
抑制固醇类药物的合成
查看完整题目与答案
【单选题】The ______ is a receipt for goods shipped on board a vessel, signed by the person (or his agent) who contracts to carry them, and stating the conditions in which the goods were delivered to (and recei...
A.
B/N
B.
S/O
C.
M/R.
D.
B/L
查看完整题目与答案
【单选题】喹诺酮类药物抗菌作用机制是
A.
抑制细菌二氢叶酸还原酶
B.
抑制细菌蛋白质合成
C.
抑制细菌RNA的合成
D.
抑制细菌DNA回旋酶
查看完整题目与答案
【多选题】专四完形填空新题型模拟题( 4 )
A.
intimate
B.
attractive
C.
person
D.
attachment
E.
satisfied
F.
receipt
G.
contaminate
H.
replace
I.
special
J.
stick K.vigorously L. advice M. circumstances N. directly O. petitions Complaints should be made to a responsible person. Go back to the shop where you bought the goods, taking with you any (1________) you may have. Ask to see the buyer in a large store. In a small store the assistant may also be the owner so you can complain (2_______). In a chain store ask to see the manager. Even the bravest person finds it difficult to complain face to face, so if you do not want to do it in (3_______), write a letter. Be sure to ( 4_______ ) to the facts and keep a copy of what you write. At this stage you should give any receipt numbers, but you should not need to give receipts or other papers to prove you bought the article. If you are not (5________) with the answer you get, or if you do not get a reply, write to the managing director of the firm, shop, or organization. Be sure to keep copies of your own letters and any you receive. If your complaint is a just one, the shopkeeper may offer to (6______) or repair the faulty article. You may find this an (7_______) solution. In certain cases you may have the right to refuse the goods and ask for your money back, but this is only where you have hardly used the goods and have acted at once. Even when you cannot refuse the goods you may be able to get some money back as well. And if you have suffered some (8_______) loss, if for example a new washing machine tears your clothes, you might receive money to replace them. If the shopkeeper offers you a credit note to be used to buy goods in the same shops but you would rather have money, say so. If you accept a credit note remember that later you will not be able to ask for your money. If the shopkeeper refuses to give you money, ask for (9______) from your Citizens' Advice Bureau before you accept a credit note. In some cases the shopkeeper does not have to give you your money back--if, for example, he changes an article simply because you don't like it or it does not fit. He does not hive to take back the goods in these (10_________).
查看完整题目与答案
【简答题】h ________ n . a person who is an authority on history and who studies it and writes about it prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
查看完整题目与答案
【单选题】喹诺酮类抗菌药的主要作用机制是（）
A.
干扰细菌细胞壁合成
B.
损伤细胞膜
C.
影响细菌蛋白质的合成
D.
抑制细菌核酸的合成
E.
抑制固醇类药物的合成
查看完整题目与答案
【单选题】下列( )项不是常见口服固体制剂的操作。
A.
粉碎
B.
混合
C.
制粒
D.
灌装
查看完整题目与答案
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