选择轮椅时，扶手过高容易引起（）
A.身体前倾
B.推动轮环时擦伤上臂皮肤
C.轮椅后倒
D.心率减慢
E.血压降低
参考答案：B
均具燥湿化痰，祛风止痉作用的药组是( )
A．白附子、天南星B．白僵蚕、牛黄C．全蝎、蜈蚣D．天麻、白芥子E．半夏、防风
Records of tests and inspections of a cargo vessel’s fire extinguishing systems shall be（）on board until the vessel’s Certificate of Inspection expires.
A.consealed
B.detained
C.contained
D.kept
