问题
单项选择题
对小车变幅的塔式起重机，起重力矩限制器应分别由（）进行控制
A.起重量和起重速度
B.起升速度和幅度
C.起重量和起重高度
D.起重量和幅度
答案
参考答案：D
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对小车变幅的塔式起重机，起重力矩限制器应分别由（）进行控制
A.起重量和起重速度
B.起升速度和幅度
C.起重量和起重高度
D.起重量和幅度
参考答案：D
| 从方框中选择适当的句子补全对话. | |
| A: Hey, Gina. Do you want some ice cream? B: No, thanks. 1 A: Really? Where are you going? B: I'm going to play baseball. Do you want to come ? A: Sorry, I can't. 2 B: Well, come later then. We're playing all aftenoon. A: 3 But I'm not very good at baseball. B: Don't worry about that. 4 _You can just watch. Come on, it'll be f'un. A: Well, OK. 5 B: OK. See you!
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