A. 固定活塞薄壁取土器的活塞是固定在薄壁筒内的，不能自由移动
B. 自由活塞薄壁取土器的活塞在取样时可以在薄壁筒内自由移动
C. 回转式三重管（单、双动）取土器取样时，必须用冲洗液循环作业
D. 水压固定活塞取土器取样时，必须用冲洗液循环作业
该内容VIP会员可见，您未登录，请先登录使用专属返佣链接推荐好友充值VIP会员，每单可得20%佣金！
手机访问快速搜题。
版权声明：本文原创或收集发布，未经许可禁止转载。
问题： [单选] He noticed that Joan was studying...
问题： [单选,材料题] The forty years from the 1930s...
问题： [单选,材料题] Air transport companies use dif...
问题： [单选] I tried very hard to persuade him...
问题： [单选] He failed to carry out some of the...
问题： [单选] The legislative provision has a gre...
帮考士![[单选] He noticed that Joan was studying him closely, but her expression gave away nothing of what s](http://bangkaoshi.com/zb_users/theme/yd1125free/include/random/10.jpg)
![[单选,材料题] The forty years from the 1930s to the 1970s was an important period](http://bangkaoshi.com/zb_users/theme/yd1125free/include/random/5.jpg)
![[单选,材料题] Air transport companies use different planes__________.](http://bangkaoshi.com/zb_users/theme/yd1125free/include/random/1.jpg)
![[单选] He failed to carry out some of the provisions of the contract, and now he has to take charge o](http://bangkaoshi.com/zb_users/theme/yd1125free/include/random/4.jpg)
![[单选] The legislative provision has a great impact on the operations of the department.](http://bangkaoshi.com/zb_users/theme/yd1125free/include/random/2.jpg)
