血压计的臂带应如何绑?
参考答案:血压计臂带必须要与心脏同高,高于心脏10公分会产生低于正常值8毫米汞柱的误差,而低于心脏8公分则会产生高于正常值8毫米汞柱的误差!
What is the way George thought of enough money to buy the house?
A.to get
B.getting
C.having got
D.being got
电动捣固机走行架下面有()个钢轨走行轮可在钢轨上走行,每根钢轨上两个走行轮。
A.1
B.2
C.3
D.4