使声带变长的肌肉是（）。
A.甲杓肌
B.环甲肌
C.杓间肌
D.杓会厌肌
E.环杓后肌
参考答案：B
一Peter, have you got your new flat furnished?
一Yes．I some used furniture and it was a real bargain．
A．will buy
B．have bought
C．bought
D．had bought
（）钢管的端部小于1．5m长度范围内的允许弯曲偏差为小于或等于5mm。
A.各种杆件
B.立杆
C.大、小横杆
