load好后直接隐藏Banner，不自动显示出来。

Assets/Script/SDKManager/AdsSDKManager/AdmobAdsManager/AdmobBannerAdManager.cs

@@ -36,6 +36,9 @@ namespace WZ
             }
             
             var bannerAds = new BannerView(adUnitId, AdSize.Banner, type == BannerAliignType.BannerCenterBottomAlign ? AdPosition.Bottom : AdPosition.Top);
+            
+            bannerAds.Hide();
+
             _bannerAds[adUnitId] = bannerAds;
             _retryCounters[adUnitId] = 0;
             _adRevenueCache[adUnitId] = 0;