汽车起重机行驶时,应将臂杆放在支架上,吊钩()。
A.挂在挂钩
B.挂上重物并将钢丝绳收紧
C.挂在挂钩上并将钢丝绳收紧
D.钢丝绳收紧
参考答案:C
Anderson is one of those()appear friendly but in fact are hard to deal with.
A. who
B. they
C. that
D. which
元气不足,全身或某些脏腑机能衰退的病理变化称作 ()
A.气陷
B.气滞
C.气脱
D.气闭
E.气虚