问题
单项选择题
电杆的埋设深度应根据土质及负荷条件计算确定,但不应小于杆长的()。
A.1/4
B.1/6
C.1/8
答案
参考答案:B
电杆的埋设深度应根据土质及负荷条件计算确定,但不应小于杆长的()。
A.1/4
B.1/6
C.1/8
参考答案:B
下列每句的画线部分中有一处错误,找出并改正。 ( )1. There are many books sell in our bookstore. A B C ( )2. My brother has a lot of homework doing today. A B C ( )3. Look! There is a man collected rubbish near your house. A B C ( )4. You are supposed cleaning the blackboard before class. A B C ( )5. We have bought the blue car since we came to China. A B C | _______________ _______________ _______________ _______________ _______________ |