价值规律作用的表现形式是()
A.商品价格围绕价值波动
B.商品价格经常低于价值
C.商品价格总是高于价值
D.商品价值围绕价格波动
参考答案:B
词语释义,选出与句中划线部分意义最相近的解释,并将其标号填入括号内。
1. Look! There are a lot of women in the park.
A. many
B. much
C. some
D. any
2. I'm sure your mother will be OK.
A. good
B. friendly
C. happy
D. fine
3. Sally sometimes goes to school by taxi.
A. by a taxi
B. takes a taxi
C. buys a taxi
D. drives a taxi
4. I can't swim. I think it's hard to learn.
A. bad
B. easy
C. not easy
D. not interesting
下面说法中不属于数控机床电气系统通电调试电源检查项目的是()。
A.要检查电源电压是否与机床设定相匹配
B.检查频率转换开关是否置于相应的位置
C.检查确认变压器的容量是否满足控制单元和伺服系统的电能消耗
D.确认数控系统内印制电路板上短路棒的设定点