问题
选择题
下列说法正确的是[ ]
A．机械效率越高的机械做功越快
B．机械效率越高的机械做功越多
C．功率越大的机械做功越快
D．功率越大的机械做功越多
答案
答案：C
搜题请搜索小程序“爱下问搜题”
下列说法正确的是[ ]
A．机械效率越高的机械做功越快
B．机械效率越高的机械做功越多
C．功率越大的机械做功越快
D．功率越大的机械做功越多
答案：C
| 从方框中选择适当的词补全对话，每词限用一次，注意用其适当形式。 | |
| |
| Maria: Hello, Lucy! 1_________ go to a movie. Lucy:2_________, I can't. I have to do my homework. Maria :Well, it's Saturday. Please relax. You can do it tomorrow. Lucy : Oh, but I 3_________don't like movies. Thank you for asking 4_________. Maria: OK. 5_________is Linda? 6 _________ she want to go to a movie? Lucy: Sorry, I 7_________ know. Look, she is over there. Maria: Hi, Linda! Do you 8 _________to go to a movie ? It's Rush Hour. Linda : Movie? That 9 _________great! Is it a comedy? I like comedies and thrillers. Maria: It's an action movie. Linda: Oh, no. I think it's 10 _________. Let's go to see a comedy My Fathers Birthday. Maria : OK, let's go. |